15 letters · 30 points in Scrabble
noun a photograph taken with the help of a microscope
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- English micrograph English photomicrograph From photo- + micrograph.
Etymology from Wiktionary, CC BY-SA 3.0