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.
2. (Med.)
Defn: Paleness produced by absence of light, or by disease. Dunglison.
ETIOLIN
E"ti*o*lin, n. Etym: [See Etiolate.] (Bot.)
Defn: A yellowish coloring matter found in plants grown in darkness, which is supposed to be an antecedent condition of chlorophyll. Encyc. Brit.
ETIOLOGICAL
E`ti*o*log"ic*al, a.
Defn: Pertaining to, or inquiring into, causes; ætiological.
ETIOLOGY
E`ti*ol"o*gy, n. Etym: [Cf. F. étiologie.]
Defn: The science of causes. Same as tiology.