"Nigrosine" Natural Recordings by Native Speakers
Nigrosine is a chemical compound with the formula C6H4N2, also known as beta-naphthylamine. It is a coloring matter found in the urine of some animals, including humans, and is responsible for the characteristic yellow-brown color of their urine.
Nigrine is an obsolete or rare word that refers to a dark-colored, tar-like substance obtained from the fruit of the Citrus aurantium plant, commonly known as the bitter orange. It was formerly used as a dye and in the production of sober, a kind of chemical vapor used in medicine.
Nigritic refers to something that is related to or characteristic of dark-skinned people, especially Africans.
Nigriventer is a rare or obsolete word that refers to a black vent, or a black cavity, often used in anatomical or physiological contexts. In particular, it can refer to a black or dark-colored opening or passage in the body, such as a black cavity in the ear or a dark-colored region on the tongue. The word is no longer commonly used in modern medical or scientific language.
Nigrostriatal refers to a tract of neurons and nerve fibers in the brain that originates in the substantia nigra, a region in the midbrain, and projects to the caudate nucleus, a part of the basal ganglia in the forebrain. This pathway plays a crucial role in motor control and is particularly affected in Parkinson's disease, where the degeneration of dopaminergic neurons in the nigrostriatal pathway leads to the classical motor symptoms of the disease, such as tremors, rigidity, and bradykinesia.
Nihilisms refers to a philosophical or intellectual movement that denies or rejects all values, moral principles, and spiritual perspectives, often leading to a sense of hopelessness and meaninglessness. It may also refer to a rejection of all positive values and the idea that life has no inherent meaning or purpose. The term is often associated with existentialism and absurdism, and can be seen as a critique of metaphysics and traditional morality.