51Թ

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helicograph

[hel-i-koh-graf, -grahf]

noun

  1. an instrument for drawing helices.

helicograph

/ -ˌɡræf, ˈhɛlɪkəʊˌɡrɑːf /

noun

  1. an instrument for drawing spiral curves

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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51Թ History and Origins

Origin of helicograph1

First recorded in 1850–55; helico- + -graph

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helico-helicoid

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