From The Collaborative International Dictionary of English v.0.48 :
Proportionality \Pro*por`tion*al"i*ty\, n. [Cf. F.
proportionnalit['e].]
The state of being in proportion. --Coleridge.
[1913 Webster]
From WordNet (r) 3.0 (2006) :
proportionality
n 1: a ratio of two quantities that is constant
2: harmonious arrangement or relation of parts or elements
within a whole (as in a design); "in all perfectly beautiful
objects there is found the opposition of one part to another
and a reciprocal balance"- John Ruskin [syn: proportion,
proportionality, balance]