[ uh-roh-buh; Spanish and Portuguese ahr-raw-bah ]

noun,plural ar·ro·bas [uh-roh-buhz; Spanish and Portuguese ahr-raw-bahs]. /əˈroʊ bəz; Spanish and Portuguese ɑrˈrɔ βɑs/.
  1. a symbol (@) that is used to link a username to a domain name, used at the beginning of Twitter handles, and in other identifying designations on the internet in Spanish-speaking countries.

  2. a Spanish and Portuguese unit of weight of varying value, equal to 25.37 pounds avoirdupois (9.5 kilograms) in Mexico and to 32.38 pounds avoirdupois (12 kilograms) in Brazil.

  1. a unit of liquid measure of varying value, used especially in Spain and commonly equal (when used for wine) to 4.26 U.S. gallons (16.1 liters).

Origin of arroba

First recorded in 1550–1560; from Spanish, Portuguese, from Arabic al rubʿ “the fourth part, a quarter (of the qintār), from Common Semitic arbaʿ “four”; see quintal

Words Nearby arroba Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use arroba in a sentence

British Dictionary definitions for arroba


/ (əˈrəʊbə) /

nounplural -bas
  1. a unit of weight, approximately equal to 11 kilograms, used in some Spanish-speaking countries

  2. a unit of weight, approximately equal to 15 kilograms, used in some Portuguese-speaking countries

  1. a liquid measure used in some Spanish-speaking countries with different values, but in Spain used as a wine-measure, approximately equal to 16 litres

Origin of arroba

C16: from Spanish, from Arabic ar-rub` the quarter (of a quintal)

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012