arcograph

[ahr-kuh-graf, -grahf]

noun Geometry.

an instrument for drawing arcs, having a flexible arc-shaped part adjusted by an extensible straight bar connecting its sides.

Origin of arcograph

First recorded in 1815–25; arc + -o- + -graph

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for arcograph

arcograph

noun

geometry an instrument used for drawing arcs without using a central pointAlso called: cyclograph

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