1. In the shape of a coil
   - coiling, spiral, spiraling [US], volute, voluted, whorled, turbinate, spiralling [Brit, Cdn]

See also: coiled, helix

Encyclopedia: Helical

• direct access
• direct action
• direct antonym
• direct contrast
• direct correlation
• direct current
• direct debit
• direct discourse
• direct dye
• direct electric current
• direct evidence
• direct examination
• direct fire
• direct flight
• direct loan
• direct mail
• direct mailer
• direct marketing
• direct object
• direct primary
• direct quotation
• direct sum
• direct support
• direct supporting fire
• direct tax