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
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
| 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 motherinduction 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 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 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 |
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
OB
(fam) V. obstetrics.English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.