allosome

A1L1L1O1S1O1M3E1
UK/ˈal.əˌsəʊm/US/ˈæl.əˌsoʊm/

noun

A sex chromosome that differs from an ordinary autosome in form, size, or behaviour.

“The human sex chromosomes are a typical pair of allosomes. The X chromosome is present in the ovum, while either X or Y chromosomes can be present in sperm.”

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Meanings

nounallosome (plural allosomes)

plural allosomes

  1. biologyA sex chromosome that differs from an ordinary autosome in form, size, or behaviour.

    The human sex chromosomes are a typical pair of allosomes. The X chromosome is present in the ovum, while either X or Y chromosomes can be present in sperm.

Origin

From allo- + -some.

Full word history & related roots →

Translations

Polish alosom, allosom
  • alosomsex chromosome that differs from an ordinary autosome
  • allosomsex chromosome that differs from an ordinary autosome
Portuguese alossomo
  • alossomosex chromosome that differs from an ordinary autosome
Cite this entry
APA

allosome. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/allosome

MLA

“allosome.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/allosome. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “allosome,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/allosome.

Source: allosome on Wiktionary, CC BY-SA 4.0.