a rack having teeth set at an oblique angle to the edges.
Compare 1 (def 5).
- Helical scan
noun 1. (modifier) denoting a recording technique used with video tapes in which the recorded tracks on the tape are segments of a helix: a helical-scan tape
[hel-i-keys, hee-li‐] /ˈhɛl ɪˌkeɪs, ˈhi lɪ‐/ noun, Biochemistry. 1. any of the enzymes that use the energy derived from the hydrolysis of nucleoside triphosphates to unwind the double-stranded helical structure of nucleic acids: RNA and DNA helicases.
[hee-list, hel-ist] /ˈhi lɪst, ˈhɛl ɪst/ adjective 1. decorated with spirals.
[hel-uh-seez] /ˈhɛl əˌsiz/ noun 1. a plural of . [hee-liks] /ˈhi lɪks/ noun, plural helices [hel-uh-seez] /ˈhɛl əˌsiz/ (Show IPA), helixes. 1. a spiral. 2. Geometry. the curve formed by a straight line drawn on a plane when that plane is wrapped around a cylindrical surface of any kind, especially a right circular cylinder, as […]