Mathematics. the identity element of a group in which the operation is addition. (of a function, especially of a function of a complex variable) a point at which a given function, usually a function of a complex variable, has the value zero; a root.
Mucosa buccalis. The inner lining of the cheeks and lips, which is an anatomic region that includes all the mucous membrane lining of the inner surface of the cheeks and lips, from the line of contact of the opposing lips to the line of attachment of mucosa to the alveolar ridges and pterygomandibular raphe, which occupies an area of 50â60 cm2.
mucus (myÅÅËÂ·k s) , n a thick, slippery discharge that comprises white blood cells, mucin, inorganic salts, water, and exfoliated cells produced by the mucous membranes.Functions to moisten and protect them.aginal mucus. the appearance of the mucus from the cow's vagina is a good indication that she is in estrus. Laboratory examination of the mucus for cell patterns and arborization is used to determine the stage of reproduction in bitches.