vitamin, vitamine

(vi-tam’in) [L. ci’te life + A form of chrono- — ᾿ ABDOMINAL AND ‘THORACIC VISCERA, SHOWING THEIR RELATIVE POSITIONS: A, upper end of sternum; &, &*, first pair of ribs; C, C*, second pair of ribs; LY, aorta, with left vagus and phrenic nerves cro ing its transverse arch; £, root of pulmonary artery; /, right ventricle; G, right auricle; H, vena cava superior with right phrenic nerve on its outer border; /, /*, right and left lungs collapsed; K, K*, seventh pair of ribs; Δ, Z*, the diaphragm in section; J, the gall-bladder, with its duct to form the common bile-duct; the hepatic artery is seen superficial to the common duct; the portal vein is seen beneath it; the open orifices of the hepatic veins are seen on the cut surface of the liver; O, the stomach; P, inferior vena cava; Q, the celiac axis dividing into the gastric, splenic, and hepatic arteries; A, spleen; 5, S*, S**, the transverse colon, between which and the lower border of the stomach is seen the gastro-epiploic artery, formed by the splenic and hepatic arteries; S***, ascending colon in the right iliac region; 7, convolutions of the small intestine (Maclise). amin]. One of a cla of substances of unknown composition, existing in minute quantity. in natural foods and nece ary to normal nutrition and growth, absence of which from the diet produces deficiency diseases, such as beriberi, scurvy, rachitis. Cf. a visa minos is.