ootid
American Heritage Dictionary:
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o·o·tid
(ō'ə-tĭd') 
n.
A haploid cell that results from the meiotic division of an oocyte and becomes a female gamete or an ovum.
n.
A haploid cell that results from the meiotic division of an oocyte and becomes a female gamete or an ovum.
[OO- + (SPERMA)TID.]
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(ō'ə-tĭd')
n.
n.
The nearly mature ovum after the first maturation division has been completed and the second initiated.
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The cell produced by meiotic division of a secondary oocyte, which develops into the ovum. In mammals, this second maturation division is not completed unless fertilization occurs.
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The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company.
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