Look up: Acrosome

1. acrosome
   Type: Term Pronunciation: ak′rō-sōm Definitions: 1. A caplike organelle or saccule derived from Golgi elements that surround the anterior two thirds of the nucleus of a sperm. Enzymes contained within this structure probably facilitate the sperm's penetration of the zona pellucida of...
   Found on http://www.medilexicon.com/medicaldictio
   
   
2. acrosome
   [n] - a process at the anterior end of a sperm cell that produces enzymes to facilitate penetration of the egg
   Found on http://www.webdictionary.co.uk/definitio
   
   
3. acrosome
   Vesicle at the extreme anterior end of the spermatozoan, derived from the lysosome.
   Found on http://www.encyclo.co.uk/visitor-contrib
   
   
4. acrosome
   <cell biology> A membrane-bound compatment at the tip of the head of a sperm which contains lytic enzymes (hyaluronidase in mammalian sperm) which digest the outer surface of the egg and allow the sperm to inject its haploid DNA. ... The compartment is secreted by the Golgi apparatus of the sp...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
5. acrosome
   noun a process at the anterior end of a sperm cell that produces enzymes to facilitate penetration of the egg
   Found on http://wordnetweb.princeton.edu/perl/web
   
   
6. acrosome
   (ak´ro-sōm) the caplike, membrane-bound structure covering the anterior portion of the head of a spermatozoon; it contains enzymes involved in penetration of the oocyte.
   Found on http://www.encyclo.co.uk/local/21001
   
   
7. acrosome
   (from the article `fertilization`) The acrosome reaction of spermatozoa is a prerequisite for the association between a spermatozoon and an egg, which occurs through fusion of their ...
   Found on http://www.britannica.com/eb/a-z/a/13
   
   
8. acrosome
   acrosome 1. A structure at the end of a sperm cell that releases enzymes to digest the cell membrane of an egg, enabling the sperm to penetrate and enter the egg for fertilization. 2. Body at the apex of spermatozoon; apical body; perforatorium.
   Found on http://www.wordinfo.info/words/index/inf
   
   
9. Acrosome
   A cap-like memrane bound structure in the head of the sperm that contains enzymes that allow the sperm to penetrate through the layers of an egg at the time of fertilization.
   Found on http://www.pregnology.com/AZ/A/3
   
   
10. Acrosome
    The acrosome is a thin cap of protoplasm encasing the head of a sperm. The acrosome is believed to contain an enzyme, hyaluronidase, that dissolves the corona radiata, the protective outer coat of the ovum, making sperm penetration easier. The enzyme of the acrosome of one sperm is insufficient to b...
    Found on http://www.probertencyclopaedia.com/brow
    
    
11. Acrosome
    Cap-like structure that surrounds the sperm head and contains enzymes that help penetration of the egg.
    Found on http://www.thebridgecentre.co.uk/04_caus
    
    
12. Acrosome
    The `acrosome` is an organelle that develops over the anterior half of the head in the spermatozoa (sperm cell) of many animals. It is a cap-like structure derived from the Golgi apparatus. Acrosome formation is completed during testicular maturation. In Eutherian mammals the acrosome contains diges...
    Found on http://en.wikipedia.org/wiki/Acrosome