What do a.m. and p.m. stand for?


[awr-thog-ruh-fee] /ɔrˈθɒg rə fi/
noun, plural orthographies for 3–5.
the art of writing words with the proper letters, according to accepted usage; correct spelling.
the part of language study concerned with letters and spelling.
a method of spelling, as by the use of an alphabet or other system of symbols; spelling.
a system of such symbols:
Missionaries provided the first orthography for the language.
an orthographic projection, or an elevation drawn by means of it.
Origin of orthography
late Middle English
1425-75; late Middle English ortografye < Latin orthographia correct writing, orthogonal projection < Greek orthographía. See ortho-, -graphy Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for orthography
  • orthography and speech are different notions in many important ways, yet it is easy for us to conflate them.
  • And he certainly practices what he preaches in terms of orthography.
  • And you don't need to take a course on orthography to appreciate that.
  • Lexical entries include information on orthography, morphology, and syntax.
  • Variants of this orthography allow for easier computer typesetting.
  • The orthography differs per island and even per group of people.
British Dictionary definitions for orthography


noun (pl) -phies
a writing system
  1. spelling considered to be correct
  2. the principles underlying spelling
the study of spelling
orthographic projection
Derived Forms
orthographer, orthographist, noun
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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Word Origin and History for orthography

"correct or proper spelling," mid-15c., ortographie, from Middle French orthographie (Old French ortografie, 13c.), from Latin orthographia, from Greek orthographia "correct writing," from orthos "correct" (see ortho-) + root of graphein "to write" (see -graphy). Related: Orthographer.

Online Etymology Dictionary, © 2010 Douglas Harper
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