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- n. The latter part of the menstrual cycle, that occurs after ovulation, in which the corpus luteum secretes progesterone to prepare the endometrium for the implantation of an embryo.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the second half of the menstrual cycle after ovulation; the corpus luteum secretes progesterone which prepares the endometrium for the implantation of an embryo; if fertilization does not occur then menstrual flow begins
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