Definition of spermatozoon noun from the Oxford Advanced Learner's Dictionary

 

spermatozoon

 noun
noun
BrE BrE//ˌspɜːmətəˈzəʊən//
 
; NAmE NAmE//ˌspɜːrmətəˈzoʊən//
 
(pl. spermatozoa
BrE BrE//ˌspɜːmətəˈzəʊə//
 
; NAmE NAmE//ˌspɜːrmətəˈzoʊə//
 
)
(biology)
 
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a sperm Word Origin mid 19th cent.: from Greek sperma, spermat- ‘seed’ + zōion ‘animal’.
See the Oxford Advanced American Dictionary entry: spermatozoon