Defn: Half detached; partly distinct or separate. Semidetached house, one of two tenements under a single roof, but separated by a party wall. [Eng.]

SEMIDIAMETER
Sem`i*di*am"e*ter, n. (Math.)

Defn: Half of a diameter; a right line, or the length of a right line, drawn from the center of a circle, a sphere, or other curved figure, to its circumference or periphery; a radius.

SEMIDIAPASON
Sem`i*di`a*pa"son, n. (Mus.)

Defn: An imperfect octave.

SEMIDIAPENTE
Sem`i*di`a*pen"te, n. (Mus.)

Defn: An imperfect or diminished fifth. Busby.

SEMIDIAPHANEITY
Sem`i*di`a*pha*ne"i*ty, n.

Defn: Half or imperfect transparency; translucency. [R.] Boyle.

SEMIDIAPHANOUS
Sem`i*di*aph"a*nous, a.