The Collaborative International Dictionary of English v.0.48:
Impressible \Im*press"i*ble\, a. [Cf. F. impressible.] Capable of being impressed; susceptible; sensitive. -- Im*press"i*ble*ness, n. -- Im*press"i*bly, adv. [1913 Webster]WordNet (r) 3.0 (2006):
impressible adj 1: easily impressed or influenced; "an impressionable youngster"; "an impressionable age"; "a waxy mind" [syn: impressionable, waxy, impressible] [ant: unimpressionable]