Abbreviations and Letter Symbols
247
- USNR—U.S. Naval Reserve
- U.S.P.—United States Pharmacopeia
- USPS—U.S. Postal Service
- U.S.S.—U.S. Senate
- v. or vs.—(versus) against
- VA—Department of Veterans Affairs
- VAT—value added tax
- VCR—video cassette recorder
- VHF—very high frequency
- VIP—very important person
- viz—(videlicet) namely
- VLF—very low frequency
- VTR—video tape recording
- W.—west
- w.a.e.—when actually employed
- Wall.—Wallace (U.S. Supreme Court Reports)
- wf—wrong font
- Wheat.— Wheaton (U.S. Supreme Court Reports)
- WHO—World Health Organization
- WIPO—World Intellectual Property Organization
- WMAL—WRC, etc., radio stations
- w.o.p.—without pay
- Yale L.J.—Yale Law Journal
- ZIP Code—Zone Improvement Plan Code (Postal Service)
- ZIP+4—9-digit ZIP Code
Standard letter symbols for units of measure
9.62.
The same form is used for singular and plural senses.
- A—ampere
- A—angstrom
- a—are
- a—atto (prefix, one-quintillionth)
- aA—attoampere
- abs—absolute (temperature and gravity)
- ac—alternating current
- AF—audiofrequency
- Ah—ampere-hour
- A/m—ampere per meter
- AM—amplitude modulation
- asb—apostilb
- At—ampere-turn
- at—atmosphere, technical
- atm—atmosphere
- at wt—atomic weight
- au—astronomical units
- avdp—avoirdupois
- b—barn
- B—bel
- b—bit
- bbl—barrel
- bbl/d—barrel per day
- Bd—baud
- bd. ft.—board foot (obsolete); use fbm
- Bé—Baumé
- Bev (obsolete); see GeV
- Bhn—Brinell hardness number
- bhp—brake horsepower
- bm—board measure
- bp—boiling point
- Btu—British thermal unit
- bu—bushel
- c—₵, ct; cent(s)
- c—centi (prefix, one-hundredth)
- C—coulomb
- °C—degree Celsius
- cal—calorie (also: calIT, International Table; cal th—thermochemical)
- cd/in²—candela per square inch
- cd/m²—candela per square meter
- cg—centigram
- cd·h — candela-hour
- Ci—curie
- cL—centiliter
- cm—centimeter
- c/m—cycles per minute
