haplosis


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hap·lo·sis

 (hăp-lō′sĭs)
n.
Reduction of the diploid number of chromosomes by one half during meiosis, resulting in the haploid number.

[Greek haploos, single; see haploid + -osis.]

haplosis

(hæpˈləʊsɪs)
n
(Biology) biology the production of a haploid number of chromosomes during meiosis