-tthi' xwyo'

== Lower Tanana == === Etymology === -tthi' (“head”) +‎ xwyo (“intelligence”) + -a' (possessed noun suffix). === Noun === -tthi' xwyo' brain stem === References === Kari, James et al. (2024), Kari, James, editor, Lower Tanana Dene Dictionary, Fairbanks, Alaska: Alaska Native Language Center, →ISBN, page 480