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meiosis Syllabification: mei·o·sis
Pronunciation: /mīˈōsəs/

Definition of meiosis in English:

noun (plural meioses-sēz)

1 Biology A type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell, as in the production of gametes and plant spores. Compare with mitosis.
Example sentences
  • In most meioses, every chromosome pair, no matter how small, sustains at least one crossover - a so-called obligate crossover or obligate chiasma.
  • They were able to work with 12 meioses (a three-generational family with four grandparents, two parents, and four children) and seven marker loci.
  • My personal hope is that students will have some intuitive understanding of meiosis as the physical basis of genetics.
2 another term for litotes.
Example sentences
  • Meiosis, often achieved through a trope of one word, may range from bitter scorn to light derision.


Pronunciation: /māˈädik/
Example sentences
  • Males can, therefore, arise spontaneously, as a result of the rare meiotic loss of an X chromosome.
  • Subsequently, one of the two mating-type alleles was lost during mitotic or meiotic divisions.
  • Several models have been proposed to explain the mechanism responsible for meiotic recombination.
Pronunciation: /-ik(ə)lē/
Example sentences
  • Systematic disruption of meiotically induced genes and analysis of the resulting sporulation phenotypes has uncovered many genes involved in various aspects of sporulation.
  • Following selection, haploids produce gametes mitotically and diploids produce gametes meiotically that then enter the random mating pool.
  • Triploids are often phenotypically normal plants but are meiotically unstable and therefore transient.


Mid 16th century (sense 2): modern Latin, from Greek meiōsis, from meioun 'lessen', from meiōn 'less'. sense 1 dates from the early 20th century.

Words that rhyme with meiosis

apotheosis, chlorosis, cirrhosis, diagnosis, halitosis, hypnosis, kenosis, metempsychosis, misdiagnosis, mononucleosis, myxomatosis, necrosis, neurosis, osmosis, osteoporosis, prognosis, psittacosis, psychosis, sclerosis, symbiosis, thrombosis, toxoplasmosis, trichinosis, tuberculosis
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