invariable Meaning, Definition & Usage

  1. noun a quantity that does not vary
    constant; constant quantity.
  2. adjective not liable to or capable of change
    • an invariable temperature
    • an invariable rule
    • his invariable courtesy

WordNet

In*va"ri*a*ble adjective
Etymology
Pref. in- not + variable: cf. F. invariable.
Definitions
  1. Not given to variation or change; unalterable; unchangeable; always uniform.
    Physical laws which are invariable. I. Taylor.
    -- In*va"ri*a*ble*ness, n. -- In*va"ri*a*bly, adv.
In*va"ri*a*ble noun
Definitions
  1. (Math.) An invariable quantity; a constant.

Webster 1913