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la1

[lah]
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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).
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Origin of la1

Middle English word dating back to 1350–1400; see origin at gamut

la2

[law, lah]
interjection Archaic or Dialect.
  1. (used as an exclamation of wonder, surprise, etc.): La, sir, how you do go on!
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Origin of la2

before 1150; Middle English, Old English; weak variant of lo1

La

Symbol, Chemistry.
  1. lanthanum.
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LA

  1. Louisiana (approved especially for use with zip code).
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La.

  1. Louisiana.
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L.A.

  1. Latin America.
  2. Law Agent.
  3. Library Association.
  4. Local Agent.
  5. Los Angeles.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for la

la1

noun
  1. music a variant spelling of lah
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la2

interjection
  1. an exclamation of surprise or emphasis
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Word Origin

Old English lo

la3

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

the chemical symbol for
  1. lanthanum
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LA

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

abbreviation for
  1. Louisiana
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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 la

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

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L.A.

abbreviation for Los Angeles, attested from 1949.

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Online Etymology Dictionary, © 2010 Douglas Harper

la in Medicine

La

  1. The symbol for the elementlanthanum

la in Science

La

lanthanum

[lănthə-nəm]
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.