Ob

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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.

OB

abbr.
1.
a. obstetric
b. obstetrics
2. obstetrician

Ob

(Russian ɔpj)
n
(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)

OB

abbreviation for
1. Old Boy
2. (Broadcasting) outside broadcast

Ob

(ɔb, ɒb)
n.
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.

OB

1. Also, obMed.
a. obstetrical.
b. obstetrician.
c. obstetrics.
2. off Broadway.

ob-

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-]

ob.

1. he died; she died.
[< Latin obiit]
2. incidentally.
[< Latin obiter]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.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 motherOB - 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
medical specialty, medicine - the branches of medical science that deal with nonsurgical techniques
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
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; "the parity of the mother must be considered"; "a bipara is a woman who has given birth to two children"
Translations

OB

(Brit) abbr of outside broadcastAußenreportage f

ob

abbr of obiit → gest.

OB

(fam) V. obstetrics.
References in periodicals archive ?
In our study, we found that the over expression of DKK4 might promote the proliferation of tumor cells with unclear mechanism and that there is over expression in genes related to cell adhesion, such as FAT3 , PCDH family (including PCDHAI , PCDHB16 , and PCDH14 ), CDH11 , and DCHS1 , and they participate in the adhesion, migration, differentiation, and signal transmission of cells by adjusting the intercellular interaction and interaction between cell and extracellular matrix; they might also be relevant to the progression of GST.
Other cadherins that showed high expression levels were CDH7, CDH10, CDH11 and CDH20 (Fig.
Sin embargo, se ha demostrado que CDH11 actua como un inhibidor del crecimiento tumoral, motilidad y difusion celular en carcinomas comunes [48,49].