Elastin
Pronunciation : E*las"tin
Part of Speech : n.
Etymology : [Elastic + -in.] (Physiol. Chem.)
Definition : Defn: A nitrogenous substance, somewhat resembling albumin, which forms the chemical basis of elastic tissue. It is very insoluble in most fluids, but is gradually dissolved when digested with either pepsin or trypsin.
Source : Webster's Unabridged Dictionary, 1913