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

testis

noun
 
/ˈtestɪs/
 
/ˈtestɪs/
(plural testes
 
/ˈtestiːz/
 
/ˈtestiːz/
)
(anatomy)
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  1. a testicle
    Word Originearly 18th cent.: from Latin, literally ‘a witness’ (i.e. to virility). Compare with testicle.
See testis in the Oxford Advanced American Dictionary
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adjective
 
 
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