Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.


 (hĕl′ĭ-sēz′, hē′lĭ-)
A plural of helix.


a plural of helix


(ˈhi lɪks)

n., pl. hel•i•ces (ˈhɛl əˌsiz)
1. a spiral.
2. the curve formed by a straight line drawn on a plane when that plane is wrapped around a cylindrical surface, esp. a right circular cylinder, as the curve of a screw.
3. a spiral, scroll-like architectural ornament, as a volute on a Corinthian capital.
4. the curved fold forming most of the rim of the external ear.
[1555–65; < Latin: a spiral, a kind of ivy < Greek hélix anything twisted]
References in periodicals archive ?
When they used the program, the researchers were surprised to discover that their top candidates for containing beta helices were all bacterial proteins.
What's more, the helices that fill space most efficiently in the team's computer simulations closely resemble those that form naturally in proteins, report Amos Maritan of the International School for Advanced Studies (SISSA) in Trieste, Italy, and his colleagues.
The helices line up, facing opposite ways, then make contact with the two helices from another pair.