helicoid

[ hel-i-koid, hee-li- ]
/ ˈhɛl ɪˌkɔɪd, ˈhi lɪ- /

adjective

coiled or curving like a spiral.

noun

Geometry. a warped surface generated by a straight line moving so as to cut or touch a fixed helix.

Origin of helicoid

First recorded in 1690–1700, helicoid is from the Greek word helikoeidḗs of spiral form. See helic-, -oid

OTHER WORDS FROM helicoid

hel·i·coi·dal, adjective hel·i·coi·dal·ly, adverb

British Dictionary definitions for helicoid

helicoid
/ (ˈhɛlɪˌkɔɪd) /

adjective also: helicoidal

biology shaped like a spiral a helicoid shell

noun

geometry any surface resembling that of a screw thread

Derived forms of helicoid

helicoidally, adverb

Medical definitions for helicoid

helicoid
[ hĕlĭ-koid′, hēlĭ- ]

adj.

Arranged in or having the general shape of a flattened coil or spiral.

Scientific definitions for helicoid

helicoid
[ hĕlĭ-koid′, hēlĭ- ]

Adjective

Arranged in or having the approximate shape of a flattened coil or spiral curve.

Noun

A surface in the form of a coil or screw. A helicoid is generated mathematically by rotating a plane or twisted curve about an axis at a fixed rate and simultaneously translating it in the direction of the line of axis, also at a fixed rate.