coitus interruptus
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noun
sexual
intercourse
in which the
penis
is
withdrawn
before
ejaculation
.: ペニスが射精の前に抜かれる性交渉
〘医〙 膣外(ちつがい)射精, 性交中絶法
ORIGIN
from
coitus
+
Latin
interruptus
‘
interrupted
’.