Helicoid Hel"i*coid, a. [Gr. ?; ?, ?, spiral + ? shape: cf. F. h['e]lico["i]de. See {Helix}.] [1913 Webster] 1. Spiral; curved, like the spire of a univalve shell. [1913 Webster]

2. (Zo["o]l.) Shaped like a snail shell; pertaining to the {Helicid[ae]}, or Snail family. [1913 Webster]

{Helicoid parabola} (Math.), the parabolic spiral. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Helicoid — Hel i*coid, n. (Geom.) A warped surface which may be generated by a straight line moving in such a manner that every point of the line shall have a uniform motion in the direction of another fixed straight line, and at the same time a uniform… …   The Collaborative International Dictionary of English

  • helicoid — index circuitous Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • helicoid — [hel′i koid΄] adj. [Gr helikoeidēs < helix, a spiral + eidēs, OID] shaped like, or coiled in the form of, a spiral, as the shell of a snail or certain inflorescences: also helicoidal n. Geom. a surface generated by the rotation of a plane or… …   English World dictionary

  • Helicoid — A helicoid with α=1, 1≤ρ≤1 and π≤θ≤π. The helicoid, after the plane and the catenoid, is the third minimal surface to be known. It was first discovered by Jean Baptiste Meusnier in 1776. Its name derives from its similarity to the helix: for… …   Wikipedia

  • Helicoid — Eine Minimalfläche ist eine Fläche im Raum, die lokal minimalen Flächeninhalt hat. Derartige Formen nehmen beispielsweise Seifenhäute an, sofern sie nicht wie im Fall von Blasen durch eingeschlossene Luft aufgebläht werden. In mathematischer… …   Deutsch Wikipedia

  • helicoid — or helicoidal adjective Date: circa 1704 1. forming or arranged in a spiral 2. having the form of a flat coil or flattened spiral < helicoid snail shell > …   New Collegiate Dictionary

  • helicoid — [ hi:lɪkɔɪd] adjective of the form of a helix. noun a helicoid object or surface. Derivatives helicoidal adjective …   English new terms dictionary

  • helicoid — helicoidal, adj. helicoidally, adv. /hel i koyd , hee li /, adj. 1. coiled or curving like a spiral. n. 2. Geom. a warped surface generated by a straight line moving so as to cut or touch a fixed helix. [1690 1700; < Gk helikoeidés of spiral form …   Universalium

  • helicoid — 1. adjective Having the form of a flattened helix 2. noun A minimal surface in the form of a flattened helix …   Wiktionary

  • helicoid — Resembling a helix. SYN: helical (2). [G. helix, a coil, + eidos, resemblance] * * * he·li·coid hel ə .kȯid, hē lə or he·li·coi·dal .hel ə kȯid əl, .hē lə adj 1) forming or arranged in a spiral 2) having the form of a flat coil or flattened… …   Medical dictionary

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