OB
obstetrics, OB, tocology, midwifery
(noun) the branch of medicine dealing with childbirth and care of the mother
Ob, Ob River
(noun) a major river of western Siberia; flows generally northward and westward to the Gulf of Ob and the Kara Sea
Source: WordNet® 3.1
Etymology
Proper noun
Ob
The westernmost of the three great Siberian rivers in Russia.
Symbol
Ob
(category theory) The set of objects of a category.
Usage notes
• Usually written followed by a pair of parentheses enclosing a capital letter which is the label of some particular category.
Anagrams
• BO, Bo, bo
Etymology 1
Noun
ob (plural obs)
(historical) a halfpenny
Etymology 2
Abbreviations.
Noun
ob (plural obs)
(archaic) an objection
(genetics) the obese gene
Coordinate terms
• (objection): sol
Anagrams
• BO, Bo, bo
Noun
OB (countable and uncountable, plural OBs)
(sport) Initialism of Olympic best.
(TV, radio) Initialism of outside broadcast.
Initialism of old boy. (male graduate; also a CB radio operator's term of address for a male)
Abbreviation of obstetrician.
Abbreviation of obstetrics.
Adjective
OB (not comparable)
Abbreviation of obstetric.
(golf) Initialism of out of bounds.
Abbreviation of obligatory. (as in "ob. link" on Usenet) (see ObLink at c2.com; see also ob-)
Anagrams
• BO, Bo, bo
Source: Wiktionary