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acrosome

 - 4 dictionary results

ac⋅ro⋅some

[ak-ruh-sohm]
–noun Cell Biology.
an organelle covering the head of animal sperm and containing enzymes that digest the egg cell coating, thus permitting the sperm to enter the egg.

Origin:
1895–1900; < G Akrosoma; see acro-, -some 3


ac⋅ro⋅so⋅mal, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To acrosome
ac·ro·some   (āk'rə-sōm')   
n.  A caplike structure at the anterior end of a spermatozoon that produces enzymes aiding in egg penetration.

[acro- + -some3.]
ac'ro·so'mal (-sō'məl) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: ac·ro·some
Pronunciation: 'ak-r&-"sOm
Function: noun
: an anterior prolongation of a spermatozoon that releases egg-penetratingenzymes —ac·ro·so·mal /"ak-r&-'sO-m&l/ adjective
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

acrosome ac·ro·some (āk'rə-sōm')
n.
See acrosomal cap.


ac'ro·so'mal (-sō'məl) adj.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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