Acrosomal

acrosome

[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; < German Akrosoma; see acro-, -some3

acrosomal, adjective
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World English Dictionary
acrosome (ˈækrəˌsəʊm)
 
n
a cap-like structure on the tip of a spermatozoon that releases enzymes on encountering the ovum allowing fusion with the ovum in the sexual reproductive process; this part of the process is known as the acrosome reaction
 
[C19: from acro- + -some³]

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American Heritage
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
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