neologism

[nee-ol-uh-jiz-uh m] /niˈɒl əˌdʒɪz əm/
noun
1.
a new word, meaning, usage, or phrase.
2.
the introduction or use of new words or new senses of existing words.
3.
a new doctrine, especially a new interpretation of sacred writings.
4.
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.
Origin
1790-1800; < French néologisme. See neology, -ism
Related forms
neologist, noun
neologistic, neologistical, adjective
Examples from the web for neologism
  • To make it substantive and then pluralising it merely allows for a false identification as a neologism.
  • Please give me a strong incentive to keep reading your blog by avoiding the use of this awful neologism.
  • Five long lectures full of numbingly dense, abstraction-and-neologism-riddled prose await the reader.
  • The word is a neologism combining the tank of tank top with the end of the word bikini.
British Dictionary definitions for neologism

neologism

/nɪˈɒləˌdʒɪzəm/
noun (pl) -gisms, -gies
1.
a newly coined word, or a phrase or familiar word used in a new sense
2.
the practice of using or introducing neologisms
3.
(rare) a tendency towards adopting new views, esp rationalist views, in matters of religion
Derived Forms
neologist, noun
neologistic, neologistical, neological (ˌnɪəˈlɒdʒɪkəl) adjective
neologistically, neologically, adverb
Word Origin
C18: via French from neo- + -logism, from Greek logos word, saying
Word Origin and History for neologism
n.

"practice of innovation in language," 1776, from French néologisme, from neo- (see neo-) + Greek logos "word" (see lecture (n.)). Meaning "new word or expression" is from 1803. Neological is attested from 1754.

neologism in Medicine

neologism ne·ol·o·gism (nē-ŏl'ə-jĭz'əm)
n.
A meaningless word used by a psychotic.

ne·ol'o·gis'tic or ne·ol'o·gis'ti·cal adj.