[hel-i-kuh l, hee-li-] /ˈhɛl ɪ kəl, ˈhi lɪ-/
pertaining to or having the form of a ; spiral.
of or shaped like a helix; spiral
“spiral-shaped,” 1590s, from Latin helicem (see helix) + -al (1).
helical hel·i·cal (hěl’ĭ-kəl, hē’lĭ-)
noun 1. 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.