Definitions for

**"Sine"**The length of a perpendicular drawn from one extremity of an arc of a circle to the diameter drawn through the other extremity.

The perpendicular itself. See Sine of angle, below.

For any acute angle in a right triangle, the ratio of the length of the opposite side, to the length of the hypotenuse.

(Acronym of hort IN terspersed lement) Any interspersed repeated sequence shorter than 500 base pairs found in 105 or more copies in the genomes of multicellular eukaryotes.

Short INterspersed Element. Families of selfish DNA elements that are a few hundred basepairs in size and dispersed throughout the genome (see Chapter 5).

short interspersed nuclear element

Without.