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dieresis

or diaeresis

[dahy-er-uh-sis] /daɪˈɛr ə sɪs/
noun, plural diereses
[dahy-er-uh-seez] /daɪˈɛr əˌsiz/ (Show IPA)
1.
the separation of two adjacent vowels, dividing one syllable into two.
2.
a sign (¨) placed over the second of two adjacent vowels to indicate separate pronunciation, as in one spelling of the older forms naïve and coöperate: no longer widely used in English.
3.
Prosody. the division made in a line or verse by coincidence of the end of a foot and the end of a word.
Origin of dieresis
1605-1615
1605-15; < Latin diaeresis < Greek diaíresis literally, distinction, division, equivalent to diaire-, stem of diaireîn to divide (di- di-3 + haireîn to take) + -sis -sis
Related forms
dieretic
[dahy-uh-ret-ik] /ˌdaɪ əˈrɛt ɪk/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for dieresis
Historical Examples
  • Since the ligatures and are used consistently, dieresis can be assumed even when not explicitly indicated.

    The Metamorphoses of Ovid Publius Ovidius Naso
  • dieresis is unpredictable; forms such as Alcathe and Pirithus are common, and have been silently corrected.

    The Metamorphoses of Ovid Publius Ovidius Naso
  • Since the ligatures and are used consistently, dieresis in oe and ae can be assumed even when not explicitly indicated.

    The Metamorphoses of Ovid Publius Ovidius Naso
  • dieresis is unpredictable in both editions; forms such as Phaeton, Ocyrrhe and Dane are common, and have been silently corrected.

    The Metamorphoses of Ovid Publius Ovidius Naso
British Dictionary definitions for dieresis

dieresis

/daɪˈɛrɪsɪs/
noun (pl) -ses (-ˌsiːz)
1.
a variant spelling of diaeresis
Derived Forms
dieretic (ˌdaɪəˈrɛtɪk) adjective
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 dieresis
n.

also diaeresis, 1610s, "sign marking the division of a diphthong into two simple sounds," from Late Latin diaeresis, from Greek diairesis "division," noun of action from diairein "to divide, separate," from dia- "apart" (see dia-) + hairein "to take" (see heresy).

Online Etymology Dictionary, © 2010 Douglas Harper
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dieresis in Medicine

dieresis di·er·e·sis (dī-ěr'ĭ-sĭs)
n.
See solution of continuity.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Difficulty index for dieresis

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Word Value for dieresis

9
9
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