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English thesaurus
P.B.
abbr.	P.B. console; passbook; Pharmacopoeia Britannica
abbr., commer.	peso Boliviano; poids brut; premium bond; private brand
abbr., dril.	plug back
abbr., earth.sc.	porphyritic basalt
abbr., econ.	post-office box; pass book
abbr., libr.	pocket book
abbr., mining.	plugging back
abbr., oil	plugged back
P/B
abbr.	Price-To-Book Ratio
abbr., auto.	power brake; power break; power brakes
abbr., avia.	push button
abbr., commer.	Program/Budget
abbr., el.	piggyback; piggy-back
abbr., mil.	parts breakdown
abbr., oil	price to book ratio
NASA	Playback
O&G	pushbutton
p.b.
abbr., earth.sc.	phosphor bronze
abbr., met.	phosphorus bronze
P&B
abbr., med.	phenobarbital and belladonna
abbr., mil., avia.	programmes and budget division
p/b
bank.	price-to-book (http://www.investopedia.com/terms/p/price-to-bookratio.asp d.)
inf.	poor bastard
P.B
abbr., sport.	personal best

p .b: 5 phrases in 4 subjects

Communications	1
Mechanic engineering	1
Medical	1
Transport	2