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WordNet (r) 3.0 (2006) (WordNet)

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"