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
Hel`i*coid"al, a.
Defn: Same as Helicoid.
— Hel`i*coid"al*ly, adv.
HELICON
Hel"i*con, n. Etym: [L., fr. Gr.
Defn: A mountain in Boeotia, in Greece, supposed by the Greeks to be the residence of Apollo and the Muses. From Helicon's harmonious springs A thousand rills their mazy progress take. Gray.
HELICONIA
Hel`i*co"ni*a, n. Etym: [NL. See Helicon.] (Zoöl.)
Defn: One of numerous species of Heliconius, a genus of tropical American butterflies. The wings are usually black, marked with green, crimson, and white.
HELICONIAN
Hel`i*co"ni*an, a. Etym: [L. Heliconius.]
1. Of or pertaining to Helicon. "Heliconian honey." Tennyson.