commensuration

from The Collaborative International Dictionary of English v.0.48

Commensuration \Com*men`su*ra"tion\, n. [Cf. F. commensuration.]
   The act of commensurating; the state of being commensurate.
   [1913 Webster]

         All fitness lies in a particular commensuration, or
         proportion of one thing to another.      --South.
   [1913 Webster]