• synonyms


noun Music.
  1. the syllable used for the sixth tone of a diatonic scale.
  2. (in the fixed system of solmization) the tone A.Compare sol-fa(def 1).
Show More

Origin of la1

Middle English word dating back to 1350–1400; see origin at gamut
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for las

Contemporary Examples

Historical Examples

British Dictionary definitions for las


  1. music a variant spelling of lah
Show More


  1. an exclamation of surprise or emphasis
Show More

Word Origin

Old English lo


the internet domain name for
  1. Lao People's Democratic Republic
Show More


the chemical symbol for
  1. lanthanum
Show More


abbreviation for
  1. Legislative Assembly
  2. Library Association
  3. local agent
  4. Los Angeles
  5. Louisiana
Show More
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

Word Origin and History for las


musical note (sixth note of the diatonic scale), early 14c., see gamut. It represents the initial syllable of Latin labii "of the lips."

Show More
Online Etymology Dictionary, © 2010 Douglas Harper

las in Medicine


  1. The symbol for the elementlanthanum
Show More
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

las in Science


  1. The symbol for lanthanum.
Show More
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.