| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024hel•i•ces (hel′ə sēz′),USA pronunciation n. - Mathematicsa pl. of helix.
Collins Concise English Dictionary © HarperCollins Publishers:: helices /ˈhɛlɪˌsiːz/ n - a plural of helix
he•lix /ˈhilɪks/USA pronunciation n. [countable], pl. hel•i•ces /ˈhɛləˌsiz/USA pronunciation he•lix•es. - a spiral.
WordReference Random House Unabridged Dictionary of American English © 2024he•lix (hē′liks),USA pronunciation n., pl. hel•i•ces (hel′ə sēz′),USA pronunciation he•lix•es. - a spiral.
- Mathematics[Geom.]the curve formed by a straight line drawn on a plane when that plane is wrapped around a cylindrical surface of any kind, esp. a right circular cylinder, as the curve of a screw. Equation:x = asinθ, y = a cosθ, z = b θ.
- Architecture
- Architecturea spiral ornament.
- Architecture(in a Corinthian capital) either of two scrolls issuing from a cauliculus. Cf. Corinthian (def. 2).
- Anatomythe curved fold forming most of the rim of the external ear. See diag. under ear.
- BiochemistrySee alpha helix.
- Greek hélix anything twisted; compare helíssein to turn, twist, roll
- Latin: a spiral, a kind of ivy
- 1555–65
Collins Concise English Dictionary © HarperCollins Publishers:: helix /ˈhiːlɪks/ n ( pl helices /ˈhɛlɪˌsiːz/, helixes)- a curve that lies on a cylinder or cone, at a constant angle to the line segments making up the surface; spiral
- a spiral shape or form
- the incurving fold that forms the margin of the external ear
- another name for volute
- any terrestrial gastropod mollusc of the genus Helix, which includes the garden snail (H. aspersa)
Etymology: 16th Century: from Latin, from Greek: spiral; probably related to Greek helissein to twist |