Go to MSN Homeencarta®
Dictionary
Find
in
Dictionary
Thesaurus
Translations
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Click to move up the list of words
helical
helical gear
helicase
helices
helichrysum
helico-
Helicobacter pylori
helicograph
helicoid
helicon
helicopter
helicopter gunship
helicopter view
heliculture
helideck
helio-
heliocentric
Click to move down the list of words
Also available:

World English Dictionary
Dictionnaire Français

helicoid
hel·i·coid [ hélli kòyd, hli kòyd ]


adjective 
Definition:
 
spiral: shaped or coiled like a spiral ( technical )
a helicoid shell


noun  (plural hel·i·coids)
Definition:
 
spiral surface: a spiral geometric surface that resembles a thread on a screw
[Late 17th century. < Greek helicoidēs< helix "spiral"]

he·li·coid·al [ hèlli kóyd'l, hli kóyd'l ] adjective
he·li·coid·al·ly adverb
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
Advertisement
© 2009 Microsoft