PROPENE
Pro"pene, n. Etym: [Propyl + ethylene.] (Chem.)

Defn: Same as Propylene.

PROPENSE
Pro*pense" a. Etym: [L. propensus, p. p. See Propend.]

Defn: Leaning toward, in a moral sense; inclined; disposed; prone;
as, women propense to holiness. Hooker.
— Pro*pense"ly, adv.
— Pro*pense"ness, n.

PROPENSION
Pro*pen"sion, n. Etym: [L. propensio: cf. F. propension. See Propend,
Propense.]

Defn: The quality or state of being propense; propensity. M. Arnold.
Your full consent Gave wings to my propension. Shak.

PROPENSITY
Pro*pen"si*ty, n.; pl. Propensities (.

Defn: The quality or state of being propense; natural inclination; disposition to do good or evil; bias; bent; tendency. "A propensity to utter blasphemy." Macaulay.

Syn. — Disposition; bias; inclination; proclivity; proneness; bent; tendency.

PROPENYL
Pro"pe*nyl, n. Etym: [Propene + -yl.] (Chem.)