/cheuh koh"sheuhn/ , n.
a group of genetically related languages spoken on the Chukchi and Kamchatka peninsulas in eastern Siberia, including Chukchi, Kamchadal, and Koryak. Also called Chukchi-Kamchatkan, Chukotko-Kamchatkan /cheuh kot"koh kam chaht"keuhn, -chat"-/ , Luoravetlan .
[ chukót ( skii ) Chukchi (adj.) + -IAN ]