SEMITISM
Sem"i*tism, n.

Defn: A Semitic idiom; a word of Semitic origin. [Written also
Shemitism.]

SEMITONE
Sem"i*tone, n. Etym: [Pref. semi- + tone. CF. Hemitone.] (Mus.)

Defn: Half a tone; — the name commonly applied to the smaller intervals of the diatonic scale.

Note: There is an impropriety in the use of this word, and half step is now preferred. See Tone. J. S. Dwight.

SEMITONIC
Sem`i*ton"ic, a.

Defn: Of or pertaining to a semitone; consisting of a semitone, or of semitones.

SEMITONTINE
Sem`i*ton*tine", a. (LIfe Insurance)

Defn: Lit., half-tontine; — used to designate a form of tontine life insurance. See Tontine insurance. —Sem`i*ton*tine", n.

SEMITRANSEPT
Sem"i*tran`sept, n. (Arch.)