14 letters · 29 points in Scrabble
originEtymology tree Proto-Indo-European *h₁éǵʰ Proto-Indo-European *-s Proto-Indo-European *h₁éǵʰs Proto-Indo-European *-teros Proto-Indo-European *h₁eǵʰsteros Proto-Italic *eksteros Latin exter Latin extrā English extra- English pyramidal English extrapyramidal From extra- + pyramidal.
Etymology from Wiktionary, CC BY-SA 3.0