"Polyautography" Natural Recordings by Native Speakers
Polyautography is an outdated term that refers to a technique in photography to vary the amount of light that reaches several filters superimposed in a single Polaroid SX-70 camera in order to create an image with multiple exposures in different colors, before the instant photography's one-shot design allowed color images to be created from multiple exposures within the APX 100 pack in SX-70.
Polyarthralgia is a medical term that refers to joint pain or inflammation in multiple joints. It is a condition characterized by pain and stiffness in several joints throughout the body. This condition is often a symptom of an underlying disorder, such as rheumatoid arthritis, lupus, or fibromyalgia, and can also be caused by infections, injuries, or other medical conditions. Polyarthralgia can range from mild to severe and can be accompanied by fatigue, fever, and other systemic symptoms.
Polyarthritis refers to inflammation of multiple joints in the body, typically more than five. This condition indicates a systemic or widespread joint problem, often associated with various forms of arthritis or other rheumatological conditions.
Polyarthropathy refers to a condition in which there are multiple joint injuries or diseases (arthropathies) affecting two or more joints throughout the body simultaneously.
A polyatomic ion is a group of two or more atoms of different elements that gains or loses electrons to form an ion. It is a negatively or positively charged ion that consists of more than one atom.
Polybotrya is a genus of ferns in the family Dryopteridaceae. They are native to tropical regions of Central and South America and are epiphytes, meaning they grow on other plants, typically trees.
Polybranchia is a term that refers to a group of marine animals, specifically a type of annelid worm. Specifically, it is a term used in several different contexts to describe different groups of marine annelid worms.In general, polybranchia refers to the condition of having many gills or branchial structures, which are used for respiration and gas exchange. These types of worms often inhabit areas with low oxygen levels, where they use their numerous gills to extract oxygen from the water.However, the term polybranchia can also be used to describe certain types of bivalve mollusks, such as clams and mussels, that have a pair of gills or branchial structures that resemble a forked or multi-branching structure.In both cases, the term polybranchia is used to describe the presence of multiple gills or branchial structures that are used for respiration, rather than a single, simpler gill structure.
Polybrominated refers to a group of chemicals that contain multiple bromine atoms attached to a molecule. These chemicals are widely used as additives in flame retardants, which are used to prevent the spread of fire in various products such as plastics, textiles, and electronics.When bromine is added to a molecule as a polybrominated compound, it can make the material more difficult to ignite and slow the spread of fire once ignited. However, polybrominated chemicals have been linked to various environmental and health concerns, including toxic effects on human health and wildlife.
Polycarbonate is a type of strong and lightweight plastic material that is known for its impact resistance and high impact strength. It is often used in a wide range of applications, including:<em> automotive parts (e.g. car headlights, dashboard trim)</em> consumer electronics (e.g. laptop shells, mobile phone casings)<em> medical equipment (e.g. medical devices, laboratory equipment)</em> eyewear (e.g. lenses, frames) sports equipment (e.g. helmets, goggles)Polycarbonate is often referred to as a "tough" plastic because it is resistant to scratches, abrasions, and impact, making it a popular choice for applications where durability and safety are essential. It is also a lightweight material, which makes it ideal for applications where weight is a concern.Polycarbonate is typically made from a combination of raw materials, including bisphenol A (BPA) and phosgene, through a condensation reaction process. The resulting material is a clear, rigid plastic that can be molded into various shapes and forms.