The Collaborative International Dictionary
Etiolating
Etiolate \E"ti*o*late\ v. i. [imp. & p. p. Etiolated; p. pr. & vb. n. Etiolating.] [F. ['e]tioler to blanch.]
To become white or whiter; to be whitened or blanched by excluding the light of the sun, as, plants.
(Med.) To become pale through disease or absence of light.
Wiktionary
etiolating
vb. (present participle of etiolate English)