Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A yellow, progesterone-secreting mass of cells that forms from an ovarian follicle after the release of a mature egg.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun anatomy A yellow mass of cells that forms from an ovarian follicle during the luteal phase of the menstrual cycle in mammals; it secretes steroid hormones.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun yellow endocrine tissue that forms in a ruptured Graafian follicle following the release of an ovum; it degenerates after a few days unless pregnancy has begun

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[New Latin corpus lūteum : Latin corpus, body + Latin lūteum, neuter of lūteus, yellow.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin corpus ("body") + lūteum ("yellow")

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