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co-ordinal

[koh-awr-dn-l]
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adjective Biology.
  1. belonging to the same order.
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Origin of co-ordinal

First recorded in 1870–75; co- + ordinal1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for coordinal

coordinal

co-ordinal

adjective
  1. (of animals or plants) belonging to the same order
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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