GNU Collaborative International Dictionary of English
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Found one definition
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‖Meiosis (mī́‑ōˈsĭs), n. [NL., fr. Gr. μείωσις, fr. μειοῦν to make smaller, from μείων. See Meionite.]
1. (Rhet.) Diminution; a species of hyperbole, representing a thing as being less than it really is; understatement; see also litotes.
[1913 Webster +PJC]
2. (Cell Biology) The cellular process by which a diploid progenitor cell forms haploid gametes, including a division of one diploid cell into two cells, each with one of the homologous sets of chromosomes.
[PJC]