Proto-EChadic: *His- (> ʔis-) sg., ? *n-HHVs- > *ngas pl.
Meaning: egg
Tumak: ŋàá < *nHs [Cp] , var ngàá <*ngas, pl.
Ndam: nā:s [CLR] <*ngas, pl.
Dangla: ḍíìsà [Fd] <*dV-ʔVs-, cf. Birgit
Migama: ḍéèsè <*dV-ʔVs- [JgMig]
Jegu: ḍḕš/sê [Jg] <*dV-ʔVs-
Bidiya: ḍíisà [JgBid]<*dV-ʔVs-
Mubi: ḍíssó [Jg] <*dV-ʔVs-
Birgit: ʔíisìyà [JgBr]
Notes: cf. the same sg./pl. forms in CCh: *nVHVs- (sg.) > *nVHHVs- > *ngVs- (pl.): Tera nòɣzǝ̀, Dgh níšè, Gdf nɔ́sʌ̀ 'woman', Malgwa ngwáša 'Frauen'. Note the old pl. form with sg. semantics in :Glv ngwasa, Gisiga ngos, etc. 'woman'. In both cases pl. form is marked also by internal -a-.
