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tester (2)
testes
testicle
testify
testimonial
testimony
testing
testis
testosterone
testudinal
testudo
testy
Tet
tetanic
tetanize
tetanus
tetany
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testosterone

tes·tos·ter·one [ te stóstə rn ]


noun 
Definition:
 
male hormone: a male steroid hormone produced in the testicles and responsible for the development of secondary sex characteristics. Use: produced synthetically for treatment of androgen deficiency. C19H28O2

[Mid-20th century. <testis + -sterone (blend of sterol + ketone)]
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