Definition -
(1) A newly invented word or expression.
(2) The use of or the practice of using new words
(3) Innovation in language

Example -
I have just coined the word neologging, which I will define as "the purposeful coining of a neologisms."

Etymology -
The word derives from the French néologisme (from the Greek neo, new + logos, word).

Oxford English Dictionary -
Its first citation in sense (2) is from 1800:
"Quaintness, the unavoidable companion of neologism, is … hostile to grace."
(W. Taylor in Monthly Mag. X. 318)

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