sperm phoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhonetic PhoneticPhoneticPhoneticPhoneticPhoneticPhoneticPhoneticphonetic noun [C] 

1. a reproductive cell produced by a male animal 

    In human reproduction, one female egg is usually fertilized by one sperm.

2. (informal) Sperm is also used for semen the liquid containing the reproductive cells of male animals . 

3. A
sperm bank is a place in which sperm is stored in order to be used by doctors to try and make   
   
women pregnant. 

4. A
sperm count is the number of live male reproductive cells in a particular amount of the liquid in 
    which they are contained. 
  
    He has a low/high sperm count.

This page is cited from Cambridge Dictionaries Online. For the original, please visit
http://dictionary.cambridge.org/define.asp?key=sperm*1+0