haploid

adjective

hap·​loid ˈha-ˌplȯid How to pronounce haploid (audio)
: having the gametic number of chromosomes typically including one of each pair of homologous chromosomes compare diploid
haploid noun
haploidy noun

Example Sentences

Recent Examples on the Web Asexual whiptails have a special trick for making spermless reproduction work: The egg cells in other animals first double their choromosomes once and then divide twice, leaving them as haploid cells, with half the normal number of genetic material. Discover Magazine, 13 Feb. 2012 Additionally the haploid nature of mtDNA means that genetic drift is far more powerful in buffeting gene frequencies and introduced stochastic fluctuations, which eventually obscure past mutational signals through myriad mutations. Razib Khan, Discover Magazine, 19 Apr. 2011 Recently, molecular studies on the basis of disease-causing mutations and haploid DNA markers (i.e. mtDNA and Y-chromosome) supported the linguistic view. Razib Khan, Discover Magazine, 9 Dec. 2012 This year, a team led by the Hebrew University of Jerusalem finally produced haploid human embryonic stem cells by forcing unfertilized egg cells to divide. Jonathon Keats, Discover Magazine, 18 Dec. 2016 By rapidly screening many of them, the researchers could isolate cells that stayed haploid after division — about 1 in 1,000. Jonathon Keats, Discover Magazine, 19 Dec. 2016 In 2001, Dr. Gianpiero Palermo of the Weill Medical College at Cornell University in New York announced that his team created artificially haploid eggs by borrowing techniques from cloning. Brian Alexander, WIRED, 1 Dec. 2005 This year, a team led by the Hebrew University of Jerusalem finally produced haploid human embryonic stem cells by forcing unfertilized egg cells to divide. Jonathon Keats, Discover Magazine, 19 Dec. 2016 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'haploid.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

Etymology

International Scientific Vocabulary, from Greek haploeidēs single, from haploos

First Known Use

1908, in the meaning defined above

Time Traveler
The first known use of haploid was in 1908

Dictionary Entries Near haploid

Cite this Entry

“Haploid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/haploid. Accessed 29 Mar. 2023.

Medical Definition

haploid

adjective
hap·​loid ˈhap-ˌlȯid How to pronounce haploid (audio)
: having the gametic number of chromosomes or half the number characteristic of somatic cells : monoploid
haploid noun
haploidy noun
plural haploidies
Last Updated: - Updated example sentences
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