etiolation n 1: a pale and sickly appearance; "his etiolation signaled years in prison" 2: the act of weakening by stunting the growth or development of something; "the etiolation of the critical tradition" 3: (botany) the act of causing a plant to develop without chlorophyll by growing it without exposure to sunlight; "the etiolation of celery"
Etiolation \E`ti*o*la"tion\, n. 1. The operation of blanching plants, by excluding the light of the sun; the condition of a blanched plant. [1913 Webster] 2. (Med.) Paleness produced by absence of light, or by disease. --Dunglison. [1913 Webster]