Definition - Using words as nouns.

1. The OED deemed this a nonce word.

Example -
I wonder how many the's you'll find in that book.

(In the above, we have turned the definite article the into a noun, thus we are nouning it.)

Oxford English Dictionary -
The term's first and only citation is from 1757:
"As to the Nouning and Verbing, which he so heavily charged you with."
(E. Griffith Lett. Henry & Frances (1767) IV. 60)

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