ac·​ro·​some | \ ˈa-krə-ˌsōm How to pronounce acrosome (audio) \

Definition of acrosome

: an anterior prolongation of a spermatozoon that releases egg-penetrating enzymes

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Other Words from acrosome

acrosomal \ ˌa-​krə-​ˈsō-​məl How to pronounce acrosome (audio) \ adjective

Examples of acrosome in a Sentence

Recent Examples on the Web Next, the acrosome, a vesicle inside the sperm cell’s head, fuses with the outer layer of the egg, igniting the release of enzymes that ease the route inside. Randi Hutter Epstein, New York Times, 17 Apr. 2020 This study will also be the closest off-planet look at the acrosome, which develops inside the head and acts like an organ. Joe Pappalardo, Popular Mechanics, 16 July 2018

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

First Known Use of acrosome

1899, in the meaning defined above

History and Etymology for acrosome

borrowed from German Akrosoma, from akro- acro- + -soma -some entry 3

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Time Traveler for acrosome

Time Traveler

The first known use of acrosome was in 1899

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Statistics for acrosome

Cite this Entry

“Acrosome.” Dictionary, Merriam-Webster, Accessed 24 Jun. 2021.

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More Definitions for acrosome


ac·​ro·​some | \ ˈak-rə-ˌsōm How to pronounce acrosome (audio) \

Medical Definition of acrosome

: an anterior prolongation of a spermatozoon that releases egg-penetrating enzymes

Other Words from acrosome

acrosomal \ ˌak-​rə-​ˈsō-​məl How to pronounce acrosome (audio) \ adjective

More from Merriam-Webster on acrosome Encyclopedia article about acrosome


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