from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A yellow carotenoid pigment, C40H56O2, found widely in nature, first isolated in corpus luteum but later discovered in body fats, egg yolk, and green plants; xanthophyll.
- n. A dried preparation of corpus luteum.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A yellow carotenoid pigment, widely distributed in both plants and animals.
from the GNU version of the Collaborative International Dictionary of English
- n. A substance of a strongly marked yellow color, extracted from the yolk of eggs, and from the tissue of the corpus luteum.
from The Century Dictionary and Cyclopedia
- n. A yellow pigment contained in the yolk of eggs, in the tissue of the corpus luteum, in blood-serum, etc. It forms orange crystals.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. yellow carotenoid pigments in plants and animal fats and egg yolks
Latin lūteum, yellow, egg yolk (from neuter of lūteus, yellow, from lūtum, yellowweed) + -in.(American Heritage® Dictionary of the English Language, Fourth Edition)