oestrone

World English Dictionary
oestrone or (US) estrone (ˈiːstrəʊn, ˈɛstrəʊn) [Click for IPA pronunciation guide]
 
n
a weak oestrogenic hormone secreted by the mammalian ovary and having the same medical uses as oestradiol. Formula: C18H22O2
 
[C20: from oestr(us) + -one]
 
estrone or (US) estrone
 
n
 
[C20: from oestr(us) + -one]

Collins English Dictionary - Complete & Unabridged 10th Edition
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WordNet
oestrone

noun
a naturally occurring weak estrogenic hormone secreted by the mammalian ovary; synthesized (trade name Estronol) and used to treat estrogen deficiency [syn: estrone
WordNet® 3.0, © 2006 by Princeton University.
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00:10
Oestrone is always a great word to know.
So is flibbertigibbet. Does it mean:
a chattering or flighty, light-headed person.
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
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