Dictionary

ischium

noun is·chi·um \ˈis-kē-əm\
plural is·chia \-ə\

Definition of ISCHIUM

:  the dorsal and posterior of the three principal bones composing either half of the pelvis
is·chi·al \-əl\ adjective

Origin of ISCHIUM

Latin, hip joint, from Greek ischion
First Known Use: 1646
Medical Dictionary

ischium

noun is·chi·um \ˈis-kē-əm\
plural is·chia \-ə\

Medical Definition of ISCHIUM

:  the dorsal and posterior of the three principal bones composing either half of the pelvis consisting in humans of a thick portion, a large rough eminence on which the body rests when sitting, and a forwardly directed ramus which joins that of the pubis

Illustration of ISCHIUM

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