Defn: A half sound; a low tone. [Obs.] "Soft he cougheth with a semisoun." Chaucer.

SEMISPHERIC; SEMISPHERICAL
Sem`i*spher"ic, Sem`i*spher"ic*al, a.

Defn: Having the figure of a half sphere. Kirwan.

SEMISPHEROIDAL
Sem`i*sphe*roid"al, a.

Defn: Formed like a half spheroid.

SEMISTEEL
Sem"i*steel` (, n.

Defn: Puddled steel. [U. S. ]

SEMITA
Sem"i*ta, n.; pl. Semitæ. Etym: [L., a path.] (Zoöl.)

Defn: A fasciole of a spatangoid sea urchin.

SEMITANGENT
Sem"i*tan`gent, n. (Geom.)