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"loss of sense of smell," 1811, Modern Latin, from Greek an-, privative prefix (see an- (1)), + osme "smell" (Doric odme), from *odsme, cognate with Latin odor (see odor).
anosmia an·os·mi·a (ān-ŏz'mē-ə)n. Loss of the sense of smell. Also called olfactory anesthesia.