12 letters · 18 points in Scrabble
adjective relating to or consisting of or yielding carbon
originEtymology tree Proto-Indo-European *kerh₃-der.? Latin carbōlbor. French carbonebor. English carbon Proto-Indo-European *-eh₂-k-s Proto-Italic *-āks Latin -āx Proto-Indo-European *-yósder. Proto-Indo-European *-éyos Proto-Italic *-ejos Proto-Italic *-eos Latin -eus Latin -aceus New Latinbor. English -aceous English carbonaceous From carbon + -aceous.
Etymology from Wiktionary, CC BY-SA 3.0