| semichorus | A half chorus; a passage to be sung by a selected portion of the voices, as the female voices only, in contrast with the full choir. Source: Websters Dictionary (01 Mar 1998) |
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| semicircular | 1. Having the form of half of a circle. 2. <anatomy> Semicircular canals, certain canals of the inner ear. Source: Websters Dictionary (01 Mar 1998) |
| semicircular canal | <anatomy> Three membranous semicircular tubes contained in the bony labyrinth of the inner ear. They are concerned with equilibrium and the interpretation of the bodys position in space. (27 Sep 1997) |
| semicirque | <ecology> A semicircular hollow or opening among trees or hills. Source: Websters Dictionary (01 Mar 1998) |
| semiconservative replication | <molecular biology> The system of replication of DNA found in all cells in which each daughter cell receives one old strand of DNA and one strand newly synthesised at the preceding S phase. The existence of semiconservative replication was demonstrated by the Meselson Stahl experiment and implies the two or multi strandedness of DNA. (18 Nov 1997) |
| semicrystalline | <chemical> Half crystalline; said of certain cruptive rocks composed partly of crystalline, partly of amorphous matter. Source: Websters Dictionary (01 Mar 1998) |
| semicubical | <mathematics> Of or pertaining to the square root of the cube of a quantity. Semicubical parabola, a curve in which the ordinates are proportional to the square roots of the cubes of the abscissas. Source: Websters Dictionary (01 Mar 1998) |
| semidecussation | Incomplete decussation such as occurs in the human optic chiasm. (05 Mar 2000) |
| semidiameter | <mathematics> 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. Source: Websters Dictionary (01 Mar 1998) |
| semidirect leads | Those in which the exploring electrode is on the chest overlying the heart or its vicinity. Synonym: precordial leads, semidirect leads. (05 Mar 2000) |
| semidouble | An office or feast celebrated with less solemnity than the double ones. See Double. <botany> Having the outermost stamens converted into petals, while the inner ones remain perfect; said of a flower. Source: Websters Dictionary (01 Mar 1998) |
| semiflexion | The position of a joint or segment of a limb midway between extension and flexion. (05 Mar 2000) |
| semifloret | <botany> See Semifloscule. Source: Websters Dictionary (01 Mar 1998) |
| semifloscule | <botany> A floscule, or florest, with its corolla prolonged into a strap-shaped petal. Synonym: semifloret. Source: Websters Dictionary (01 Mar 1998) |
| semiflosculous | <botany> Having all the florets ligulate, as in the dandelion. Source: Websters Dictionary (01 Mar 1998) |