Hyphenation
 tet·ra·he·dronTurkish pronunciation
 tetrıhidrınPronunciation
 /ˌtetrəˈhēdrən/ /ˌtɛtrəˈhiːdrən/
Etymology
 [ "te-tr&-'hE-dr&n ] (noun.) 1570. From Ancient Greek τετράεδρον (tetraedron, “triangle-based pyramid”), from τετράς (tetras, “four”) + ἕδρα (hedra, “seat”).