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Isa.

  1. Isaiah.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for isa

ISA1

abbreviation for
  1. International Standard Atmosphere
  2. Interim Standard Atmosphere
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ISA2

n acronym for
  1. individual savings account: a tax-free savings scheme introduced in Britain in 1999
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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