Webster's English Dictionary

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sperm

sperm \'sp*rm\ n or sperm or sperms [ME, fr. MF esperme, fr. LL spermat-, 
   sperma, fr. Gk; akin to] pl  Gk speirein to sow - more at SPROUT 1a: the 
   male fecundating fluid : SEMEN  1b: a male gamete  2: a product of the 
   sperm whale