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geometer

American  
[jee-om-i-ter] / dʒiˈɒm ɪ tər /

noun

  1. geometrician.

    1. Also geometer moth an adult geometrid moth.

    2. the larva of a geometrid moth; inchworm.


geometer British  
/ dʒɪˈɒmɪtə, dʒɪˌɒmɪˈtrɪʃən, ˌdʒiːəʊmɪ- /

noun

  1. a person who is practised in or who studies geometry

"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

Etymology

Origin of geometer

First recorded in 1375–1425; late Middle English gemeter, from Late Latin geōmeter, from Latin geōmetrēs, from Greek geōmétrēs; equivalent to geo- + -meter