To fasten or secure with or as if with a cord, rope, or strap: tied the kite to a post; tie up a bundle. 2. To fasten by drawing together the parts or sides and knotting with strings or laces: tied her shoes. 3. a. To make by fastening ends or parts: tie a knot. b. To put a knot or bow in: tie a neck scarf.
Mucous cells of the stomach lining secrete mucus (pink) into the lumen. In vertebrates, mucus (/mjuËkÉs/ MYOO-kÉss; adjectival form: mucous) is a slippery secretion produced by, and covering, mucous membranes. Mucous fluid is rich in glycoproteins and water and is typically produced from cells found in mucous glands.
GCIDE(0.00 / 0 votes)Rate this definition: Mucin(n.) (Physiol. Chem.) Any of a class of high molecular weight glycoproteins which are contained in mucus, and give to the latter secretion its peculiar ropy character. They are found in all the secretions from mucous glands, and also between the fibers of connective tissue, as in tendons.