Words Starting With "X"
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Xanthinine
Xanthine is a compound which consists of a pyrimidine ring with two keto groups and an amino group.<br><br>In biochemistry, xanthine is an intermediate product in the breakdown of purine nucleotides. Xanthine is oxidized to uric acid in the liver by the xanthine oxidase enzyme, which contains a molybdenum cofactor.<br><br>Xanthine is also a precursor to uric acid in humans. A buildup of xanthine and uric acid in the body is associated with gout and several other diseases.
Xanthippe
A term that refers to a peevish or irritable wife, typically, but not exclusively in a humorous or exaggerated way.
Xanthippus
Xanthippus was an Athenian who was charged with abuse against the would-be reformer and philosopher Sokrates. He was generally believed to have been the brother and father of some of the notorious leaders of the Athenian participation in the Sicilian Expedition, although there is much uncertainty about these relationships. Little else is known of Xanthippus, though Plutarch names him as the leader of the Athenian forces left at the Oenomaus river, who were successfully outmanoeuvred and destroyed by the Carthaginian general Hannibal in the Battle of Tunis in 255 BCE, and Aristotle names him the instigator of the still unpropitious expedition against the Northern Greek Meteora town of Phocion tried to detain.
Xanthium
Xanthium refers to a genus of annual and perennial weeds in the sunflower family, Asteraceae.
Xanthocephalus
Xanthocephalus refers to yellow-headed. It's a term used in various contexts, often in relation to bird species, particularly the Xanthocephalus xanthocephalus, also known as the Yellow-headed Blackbird, a species of bird in the family Icteridae found in wetlands throughout western North America.
Xanthochroi
Xanthochroi refers to people with yellowish or pale skin, but more specifically, it relates to a rare group of individuals with a skin condition where their skin has a yellowish discoloration due to a buildup of bilirubin or carotenoids in the skin.
Xanthochroid
Xanthochroid refers to a person with yellow or golden hair, especially as part of a particular ethnic or geographic complexion.
Xanthochroism
The condition of having a yellowish discoloration or pigmentation, often due to a yellow or brownish tinge in the skin or eyes.
Xanthochromia
Xanthochromia refers to the yellowish or yellowish-brown color of the cerebrospinal fluid (CSF) which results from the presence of bilirubin, a byproduct of red blood cell breakdown. It is usually seen in cases of subarachnoid hemorrhage, subarachnoid hemorrhage that occurs after head injury or trauma, and is an important indicator for diagnosing subarachnoid hemorrhage, especially after the initial 24 hours of head injury.
Xanthochromic
Xanthochromic refers to a condition or appearance characterized by a yellowish hue, often in the eyes, skin, or other bodily fluids, due to the presence of bilirubin or other yellow pigments.
Xanthoderma
Xanthoderma refers to an abnormal condition characterized by a yellowish or light-colored skin discoloration. It can be caused by a variety of factors, including diet, liver disease, and certain medications. In some cases, it may also be a sign of an underlying medical condition, such as jaundice, hemochromatosis, or hyperlipidemia.
Xanthogen
Xanthogen refers to a color yellow or yellowish, often used to describe dyes, pigments, or substances that have a yellow or yellow-green hue.
Xanthogenate
A xanthogenate is a class of compounds that contains a xanthogen group, which is a thiocarbonate (-CSC(O)O-) functional group. The xanthogen group is a derivative of xanthic acid, a compound consisting of two sulfane sulfur atoms bonded to a central oxygen atom. Xanthogenates are typically derived from alcohols or phenols, and are often used as sulfiting agents or in the production of plastics and adhesives. The xanthogenate group is also a key component of some pharmaceuticals and reagents used in analytical chemistry.
Xanthogenic
Xanthogenic means relating to or producing choler (bile) or producing yellow or yellowish coloration.
Xanthogranuloma
A relatively rare skin condition characterized by the appearance of yellowish or golden-colored skin nodules or tumors, primarily on the neck, chest, or eyes.
Xanthogranulomatous
Xanthogranulomatous is an adjective that describes a type of inflammation characterized by the presence of yellow granulomas. Granulomas are areas of inflamed tissue composed of immune cells, and the yellow granules are typically composed of lipid-laden macrophages. In medical contexts, xanthogranulomatous refers to a condition that involves the formation of yellow granulomas, often in tissues such as the kidney, pancreas, or prostate.<br><br>Example: "Xanthogranulomatous pyelonephritis is a rare form of kidney inflammation characterized by the presence of yellow granulomas in the kidney tissue."<br><br>In pathology, xanthogranulomatous can also refer to a pattern of granulomatous inflammation with a predominance of lipid-laden macrophages, often seen in conditions such as xanthogranulomatous cholecystitis (inflammation of the gallbladder) or xanthogranulomatous appendixitis (inflammation of the appendix).
Xanthoma
A xanthoma is a small, lump-like growth on the skin that is filled with an abnormal amount of yellowish or orange-colored fat. Xanthomas are caused by a buildup of cholesterol in the skin, typically in people with high levels of cholesterol or low-density lipoprotein (LDL) in their blood. They are usually harmless and can appear anywhere on the body, but may be more common on the elbows, knees, hands, feet, or eyelids.
Xanthomas
Xanthomas refer to small, benign growths or lesions that are made of fatty tissue under the skin, typically yellowish in color due to the presence of lipid deposits. They can appear anywhere on the body and are often associated with genetic conditions such as familial hypercholesterolemia, where the body's ability to remove low-density lipoprotein (LDL) or "bad" cholesterol from the bloodstream is impaired, causing cholesterol to accumulate in the skin, tendons, and other tissues.
Xanthomata
Xanthomas or xanthomata are patchy areas of skin discoloration seen in disorders characterized by abnormal fat collection in various tissues, including the skin.
Xanthomatosis
Xanthomatosis is a medical term that refers to the appearance of yellowish lesions or patches on the skin, known as xanthomas. These lesions contain lipid-laden macrophages, which are a type of immune cell that accumulates lipids.<br><br>Xanthomatosis can be caused by a variety of factors, including:<br><br>1. Genetic disorders: Certain genetic conditions, such as familial dysbetalipoproteinemia, can cause xanthomatosis.<br>2. Hyperlipidemia: High levels of lipids in the blood, often caused by diet or other medical conditions, can lead to xanthomatosis.<br>3. Obesity: Excess body fat can contribute to xanthomatosis.<br>4. Infections: Certain bacterial and fungal infections, such as tuberculoid leprosy, can cause xanthomatosis.<br>5. Liver disease: Certain liver conditions, such as primary biliary cirrhosis, can cause xanthomatosis.<br><br>Xanthomatosis can manifest in different parts of the body, including the skin, tendons, and joints. The lesions can be painful and may cause discomfort, but they are usually non-cancerous and can be treated with various medications and lifestyle changes.
Xanthomatous
Xanthomatous refers to a condition or appearance characterized by yellowish nodules or patches. It often relates to a fatty deposit or an inflammatory lesion. In medicine, it can describe conditions such as xanthomas or xanthelasmata, which are fatty collections found in the skin or other tissues. The word is derived from the Greek word "xanthos," meaning yellow.
Xanthomax
Xanthoma refers to a yellowish patch or growth in the skin. Xanthoma can also be used as a medical term for a type of skin condition characterized by the appearance of yellowish bumps or growths due to excess fat accumulation in the skin.<br><br>There is a medication called Xanthomax, which is a brand name for a supplement that claims to support thyroid health and fat loss.<br><br>The term "Xanthoma" comes from the Greek word "xanthos," meaning yellow.
Xanthomelanous
A rare or obsolete word!<br><br>Xanthomelanous (adjective) means having or characterized by a yellowish-brown color, or a combination of yellow and black. It can also refer to something that is chequered or mottled in the color yellow-brown or yellow-black.
Xanthomonad
Xanthomonad refers to a type of rod-shaped bacteria that belong to the genus Xanthomonas. These bacteria are commonly found in soil, water, and plants, and are known to cause diseases in plants, such as bacterial leaf spot and blight. They are often gram-negative and have a single flagellum at one or both ends.<br><br>The term "xanthomonad" also refers to the shape of the bacteria, which is rod-shaped, often with rounded ends. The prefix "xantho-" means "yellow" in Greek, which is a reference to the yellow pigmentation found in some species of Xanthomonas.<br><br>Xanthomonad bacteria are typically between 0.5 to 5.0 micrometers in length and 0.3 to 1.0 micrometers in width. They are often motile and can move using their single flagella. These bacteria are opportunistic pathogens and can infect a wide range of plants, including crops and ornamental plants.
Xanthomonas
A medical/ scientific term.<br><br>Xanthomonas is a genus of Gram-negative bacteria that can infect a wide range of plant species, including rice, corn, and tea plants. They are known to cause diseases such as bacterial blight, leaf spot, and bacterial leaf streak.<br><br>The name "Xanthomonas" comes from the Greek words "xanthos", meaning yellow, and the suffix "-omonas", which suggests a relation to the scientific classification of bacteria. The bacteria often produce yellow pigments, such as xanthomonadin, which are responsible for their characteristic color.<br><br>Xanthomonas is an important target in agricultural science, particularly in the development of disease-resistant crops and novel microbial control methods.
Xanthone
Xanthone is a type of organic compound found in various plants and has some unique properties. It is a polycyclic ketone with the chemical formula C13H10O2. Xanthones are known for their potential medicinal and biological activities, such as antioxidant, anti-inflammatory, and anticancer properties.<br><br>There are also several isomers of xanthone, which differ in their chemical structure, including:<br><br> Hepoxanthone<br> Chalepin<br> 9,9a-Dihydroxanthone<br> Tetracyclic xanthones<br><br>Xanthones are an interesting class of compounds with potential applications in areas such as pharmaceuticals, cosmetics, and food technology.
Xanthones
Xanthones are a class of organic compounds that have a xanthone nucleus, which is a cyclohexenedione structure with two keto groups separated by a five-membered carbon ring unit. Xanthones are known for their unique properties and applications in various fields, including:<br><br>1. Biochemistry: Xanthones are naturally produced by plants, particularly in the leaves and roots of certain shrubs and trees. They have been found to have antioxidant, anti-inflammatory, and antimicrobial properties, which have potential health benefits.<br>2. Medicinal applications: Xanthones have been researched for their potential in treating various diseases, such as cancer, Alzheimer's disease, and cardiovascular disease.<br>3. Food industry: Xanthones are used as natural food additives and preservatives, due to their antimicrobial and antioxidant properties.<br>4. Cosmetics: Xanthones are used in skincare products, such as face creams and lotions, due to their antioxidant and anti-inflammatory properties.<br><br>Examples of xanthones include:<br><br> Mangosteen<br> Mangiferin<br> Honokiol<br> Royleanone<br> Glycosphosphate
Xanthophane
Xanthophane is a yellow pigment, which is a type of substance found in plants and certain types of animal tissue. It forms by the polymerization of the amino acid tyrosine in the presence of sunlight, characteristic of the cuticles of brown algae, lichens, and certain fungi. The term "xanthophane" is directly derived from the Greek words "xanthos", meaning 'yellow', and "phone", meaning 'bearer', which translates to 'yellow bearer' or 'yellow pigment'.
Xanthophore
Xanthophore refers to a cell that produces yellow or yellow pigment, particularly in the skin of vertebrates, especially fish and other marine animals. These cells contain a pigment called carotenoid, which absorbs light and reflects yellow and red hues, causing the coloration of the skin and scales.
Xanthophyceae
Xanthophyceae refers to a division of ancient, greenish-yellow to yellowish-green algae that were formerly classified as a distinct class of green algae (Division Chlorophyta). They are mostly found in freshwater environments, but they also exist in brackish and marine environments.