English-Thai Dictionary

helicoid

A ที่ เป็นเกลียว หรือ ขด  helicoidal

 

helicoidal

A ที่ เป็นเกลียว หรือ ขด  helicoid

 

Webster's 1913 Dictionary

HELICOID

Hel "i *coid, a. Etym: [Gr. hélicoïde. See Helix. ]

 

1. Spiral; curved, like the spire of a univalve shell.

 

2. (Zoöl.)

 

Defn: Shaped like a snail shell; pertaining to the Helicidæ, or Snail family. Helicoid parabola (Math. ), the parabolic spiral.

 

HELICOID

HELICOID Hel "i *coid, n. (Geom.)

 

Defn: 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 angular motion about it.

 

HELICOIDAL

HELICOIDAL Hel `i *coid "al, a.

 

Defn: Same as Helicoid. -- Hel `i *coid "al *ly, adv.

 

New American Oxford Dictionary

helicoid

hel i coid |ˈheliˌkoid ˈhɛləˌkɔɪd | ▶noun an object of spiral or helical shape. • Geometry a surface formed by simultaneously moving a straight line along an axis and rotating it around it (like a screw thread ). ▶adjective of the form of a helix or helicoid. DERIVATIVES hel i coi dal |ˌheliˈkoidəl |adjective ORIGIN late 17th cent.: from Greek helikoeidēs ‘of spiral form, ’ from helix, helik- (see helix ).

 

Oxford Dictionary

helicoid

helicoid |ˈhiːlɪkɔɪd | ▶noun a helical or spiral object. • Geometry a surface formed by simultaneously moving a straight line along an axis and rotating it around it (like a screw thread ). ▶adjective of the form of a helix or helicoid. DERIVATIVES helicoidal |hiːlɪˈkɔɪdəl |adjective ORIGIN late 17th cent.: from Greek helikoeidēs ‘of spiral form ’, from helix, helik- (see helix ).

 

French Dictionary

hélicoïdal

hélicoïdal , ale , aux adj. adjectif En forme d ’hélice. : Des escaliers hélicoïdaux. SYNONYME en colimaçon . Note Orthographique hélico ï dal.

 

Spanish Dictionary

helicoidal

helicoidal adjetivo Que tiene forma de hélice :estría helicoidal; la columna salomónica tiene el fuste de forma helicoidal .

 

helicoide

helicoide nombre masculino Superficie engendrada por una recta que se mueve apoyándose en una hélice y en el eje del cilindro que la contiene, con el cual forma constantemente un mismo ángulo .