9 letters · 16 points in Scrabble
originEtymology tree Proto-Indo-European *weyḱ- Proto-Indo-European *-os Proto-Indo-European *wóyḱos Proto-Hellenic *wóikos Ancient Greek οἶκος (oîkos) Latin oeco- French éco- English eco- Ancient Greek σφαῖρᾰ (sphaîră)bor. Latin sphaera Late Latin sphērader. Old French spherebor. Middle English spere English sphere English -sphere English ecosphere From eco- + -sphere.
Etymology from Wiktionary, CC BY-SA 3.0