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OB
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I. (noun)
Sense 1
Meaning:
The branch of medicine dealing with childbirth and care of the mother
Synonyms:
midwifery; OB; obstetrics; tocology
Classified under:
Nouns denoting cognitive processes and contents
Hypernyms ("OB" is a kind of...):
medical specialty; medicine (the branches of medical science that deal with nonsurgical techniques)
Domain member category:
induction of labor ((obstetrics) inducing the childbirth process artificially by administering oxytocin or by puncturing the amniotic sac)
presentation ((obstetrics) position of the fetus in the uterus relative to the birth canal)
incompetent cervix ((obstetrics) uterine cervix that becomes dilated before term and without labor often resulting in miscarriage or premature birth)
nullipara ((obstetrics) a woman who has never give birth to a child)
gravida I; primigravida ((obstetrics) a woman who is pregnant for the first time)
para I; primipara ((obstetrics) woman who has been delivered of a child for the first time)
quadripara ((obstetrics) woman who has given birth to a viable infant in each of four pregnancies)
quintipara ((obstetrics) woman who has given birth to a viable infant in each of five pregnancies)
para; parity ((obstetrics) the number of liveborn children a woman has delivered)
Hyponyms (each of the following is a kind of "OB"):
fetology; foetology (the branch of medicine concerned with the fetus in the uterus)
perinatology (the branch of obstetrics concerned with the anatomy and physiology and diagnosis and treatment of disorders of the mother and the fetus or newborn baby during late pregnancy and childbirth and the puerperium)
Sense 2
Meaning:
A major river of western Siberia; flows generally northward and westward to the Gulf of Ob and the Kara Sea
Synonyms:
Ob; Ob River
Classified under:
Nouns denoting natural objects (not man-made)
Instance hypernyms:
river (a large natural stream of water (larger than a creek))
Holonyms ("Ob" is a part of...):
Siberia (a vast Asian region of Russia; famous for long cold winters)
