helicograph

English

Etymology

helico- +‎ -graph

Noun

helicograph (plural helicographs)

1. An instrument for drawing spiral lines on a plane.

See also

Spirograph - a kind of helicograph

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for “helicograph”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.)