Definition of invariable in English:

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Pronunciation: /ɪnˈvɛːrɪəb(ə)l/


1Never changing: his routine was invariable
More example sentences
  • The invariable result is always supposed to be mass unemployment, industry collapse, and economic meltdown - until someone points out reality.
  • Side effects (from both free drug and free marine antibody protein) will be the invariable result.
  • The invariable result is a loss of quality and the increasing difficulty of including foreign authors in the publishers' programmes.
1.1 Grammar (Of a noun in an inflected language) having the same form in both the singular and the plural, as does relais in French.
Example sentences
  • It consists, just as Esperanto, of completely invariable blocks that combine without restriction.
1.2 Mathematics (Of a quantity) constant.
Example sentences
  • The fundamental constants are an extensive set of invariable quantities, such as the charge of the electron, which scientists use to predict a very wide range of phenomena.
  • Thus, the flux of water vapour at a constant concentration gradient across pores of invariable geometry will depend only on the molecular characteristics of the gas (solvent).
  • The null hypothesis tested in this study, then, was the proportion of invariable sites model plus either site-specific or gamma-distributed rate variation.



Pronunciation: /ɪnvɛːrɪəˈbɪlɪti/
Example sentences
  • Science does not rest for us on sure foundations unless the invariability of the laws of nature is admitted.
  • Initially sympathetic commentators lose patience with him when they view his work in its cumulative invariability.
  • So just as numbering before and after in change produces the notion of time, so awareness of invariability in something altogether free from change produces the notion of eternity.


Example sentences
  • Everything develops into invariableness in a collective state.


Late Middle English: from French, or from late Latin invariabilis, from in- 'not' + variabilis (see variable).

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