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ornithol.

American  

abbreviation

  1. ornithological.

  2. ornithology.

ornithol. British  

abbreviation

  1. ornithological

  2. ornithology

"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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Ornithol′ogist, one versed in ornithology, or who makes a special study of birds; Ornithol′ogy, the science and study of birds; Or′nithomancy, divination by means of birds, by observing their flight, &c.—adjs.

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.