Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Not varying; constant.
  • adjective Mathematics Unaffected by a designated operation, as a transformation of coordinates.
  • noun An invariant quantity, function, configuration, or system.

from The Century Dictionary.

  • In physical chemistry, having a variance equal to zero.
  • noun An entity compounded of constituents, some of them subject to change or variation, which, despite this change, remains itself unchanged.
  • Not varying or changing; remaining always the same.
  • noun In mathematics, a function of the coefficients of a quantic such that, if the quantic is linearly transformed, the same function of the new coefficients is equal to the first function multiplied by some power of the modulus of transformation.
  • noun See the adjectives.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Math.) An invariable quantity; specifically, a function of the coefficients of one or more forms, which remains unaltered, when these undergo suitable linear transformations.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective not varying; constant
  • adjective mathematics Unaffected by a specified operation (especially by a transformation)
  • adjective computing, programming Neither covariant nor contravariant.
  • noun An invariant quantity, function etc.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a feature (quantity or property or function) that remains unchanged when a particular transformation is applied to it
  • adjective unvarying in nature
  • adjective unaffected by a designated operation or transformation

Etymologies

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Examples

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