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neologism

[ nee-ol-uh-jiz-uhm ]
/ niˈɒl əˌdʒɪz əm /
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noun

a new word, meaning, usage, or phrase.
the introduction or use of new words or new senses of existing words.
a new doctrine, especially a new interpretation of sacred writings.
Psychiatry. a new word, often consisting of a combination of other words, that is understood only by the speaker: occurring most often in the speech of schizophrenics.

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Origin of neologism

From the French word néologisme, dating back to 1790–1800. See neology, -ism
ne·ol·o·gist, nounne·ol·o·gis·tic, ne·ol·o·gis·ti·cal, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for neologism

neologism

neology

/ (nɪˈɒləˌdʒɪzəm) /

noun plural -gisms or -gies

a newly coined word, or a phrase or familiar word used in a new sense
the practice of using or introducing neologisms
rare a tendency towards adopting new views, esp rationalist views, in matters of religion
neologist, nounneologistic, neologistical or neological (ˌnɪəˈlɒdʒɪkəl), adjectiveneologistically or neologically, adverb
C18: via French from neo- + -logism, from Greek logos word, saying
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

Medical definitions for neologism

neologism
[ nē-ŏlə-jĭz′əm ]

n.

A meaningless word used by a psychotic.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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