12 letters · 25 points in Scrabble
noun the use of strong light to treat acne or hyperbilirubinemia of the newborn
originEtymology tree Proto-Indo-European *bʰeh₂- Proto-Indo-European *bʰéh₂os Proto-Hellenic *pʰáwos Ancient Greek φᾰ́ος (phắos) Ancient Greek φῶς (phôs) Ancient Greek φωτο- (phōto-)der. English photo- Proto-Indo-European *treb-der.? Ancient Greek θερᾰ́πων (therắpōn) Ancient Greek -εύς (-eús) Ancient Greek -εύω (-eúō) Ancient Greek θεραπεύω (therapeúō) Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂…
Etymology from Wiktionary, CC BY-SA 3.0