Definitions

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

  • noun Reduction of the diploid number of chromosomes by one half during meiosis, resulting in the haploid number.

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

  • noun biology The halving of the number of chromosomes during meiosis, resulting in the haploid number

Etymologies

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

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

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