Where does “*isu,*usu” come from?

*isu,*usu (Proto-Polynesian) comes from Proto-Oceanic *icuŋ, from Proto-Malayo-Polynesian *ijuŋ, from Proto-Malayo-Polynesian ujuŋ, from Proto-Austronesian mujiŋ — nose.

Ancestry of “*isu,*usu”, step by step

StepLanguageWordMeaning
1Proto-Oceanic*icuŋnose organ of the face
2Proto-Malayo-Polynesian*ijuŋ—
3Proto-Malayo-PolynesianujuŋAlternative form of *ijuŋ
4Proto-Austronesianmujiŋnose

Words derived from “*isu,*usu”

Every word from Proto-Austronesian mujiŋ →Every word from Proto-Malayo-Polynesian ujuŋ →Every word from Proto-Malayo-Polynesian *ijuŋ →