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Old English searian (intransitive) "dry up, to wither," from Proto-Germanic *saurajan (cf. Middle Dutch soor "dry," Old High German soren "become dry"), from root of sear "dried up, withered" (see sere). Meaning "cause to wither" is from early 15c. Meaning "to brand, to burn by hot iron" is recorded from c.1400, originally especially of cauterizing wounds; figurative use is from 1580s. Related: Seared; searing.