13 letters · 18 points in Scrabble
adjective of or relating to parasites that live in the internal organs of animals
originEtymology tree Proto-Indo-European *h₁n̥dóm Proto-Hellenic *éndon Ancient Greek ἔνδον (éndon)der. English endo- English parasite Proto-Indo-European *-ikos Proto-Italic *-ikos Latin -icuslbor. Old French -iquebor. Middle English -ik English -ic English parasitic English endoparasitic From endo- + parasitic.
Etymology from Wiktionary, CC BY-SA 3.0