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Ob(ŏb, ôb, ôp)
A river, about 3,700 km (2,300 mi) long, of central Russia flowing generally northward to the Gulf of Ob, an arm of the Arctic Ocean.
(Placename) a river in N central Russia, formed at Bisk by the confluence of the Biya and Katun Rivers and flowing generally north to the Gulf of Ob (an inlet of the Arctic Ocean): one of the largest rivers in the world, with a drainage basin of about 2 930 000 sq km (1 131 000 sq miles). Length: 3682 km (2287 miles)
1. Old Boy
2. (Broadcasting) outside broadcast
1. a river in the W Russian Federation in Asia, flowing NW to the Gulf of Ob. 2500 mi. (4025 km) long.
2. Gulf of, an inlet of the Arctic Ocean. ab. 500 mi. (800 km) long.
1. Also, obMed.
2. off Broadway.
a prefix meaning “toward,” “to,” “on,” “over,” “against,” occurring in loanwords from Latin; used also, with the senses “reversely,” “inversely,” to form New Latin and English scientific terms: object; obligate; oblanceolate.Also, o-, oc-, of-, op-.
[Middle English (< Old French) < Latin, representing ob (preposition); in some scientific terms, < New Latin, Latin ob-]
1. he died; she died.
[< Latin obiit]
[< Latin obiter]
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|Noun||1.||Ob - a major river of western Siberia; flows generally northward and westward to the Gulf of Ob and the Kara Sea|
Siberia - a vast Asian region of Russia; famous for long cold winters
|2.||OB - the branch of medicine dealing with childbirth and care of the mother|
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; "Cesarean sections are sometimes the result of abnormal presentations"
incompetent cervix - (obstetrics) uterine cervix that becomes dilated before term and without labor often resulting in miscarriage or premature birth
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
nullipara - (obstetrics) a woman who has never give birth to a child
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