Cointension
Pronunciation : Co`in*ten"sion
Part of Speech : n.
Definition : Defn: The condition of being of equal in intensity; -- applied to relations; as, 3 : 6 and 6 : 12 are relations of cointension. Cointension . . . is chosen indicate the equality of relations in respect of the contrast between their terms. H. Spencer.
Source : Webster's Unabridged Dictionary, 1913