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spiro-1

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  1. a combining form meaning “respiration,” used in the formation of compound words: spirograph.

Origin of spiro-1

combining form of Latin spīrāre to breathe

spiro-2

  1. a combining form meaning “coil,” “spiral,” used in the formation of compound words: spirochete.

Origin of spiro-2

combining form of Latin spīra < Greek speîra coil
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for spiro-

spiro-1

combining form
  1. indicating breath or respirationspirograph

Word Origin

from Latin spīrāre to breathe

spiro-2

combining form
  1. spiral; coilspirochaete

Word Origin

from Latin spīra, from Greek speira a coil
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

spiro- in Medicine

spiro-

pref.
  1. Spiral; coil; coil-shaped:spirillar.
  2. Breath; breathing;spirograph.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.