nonfunctioning

adjective

non·func·tion·ing | \ˌnän-ˈfəŋ(k)-sh(ə-)niŋ

Definition of nonfunctioning

1 : not performing or able to perform a function : not functioning : nonfunctional a nonfunctioning telephone a nonfunctioning kidney

2 medical, of a tumor : not secreting hormones or not secreting hormones that produce clinical symptoms a nonfunctioning pituitary adenoma nonfunctioning islet cell tumors

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There are more nonfunctioning lights on the road today than there ever used to be. — Bob Weber, chicagotribune.com, "Mechanics can't find source of stalling engine, but Motormouth has diagnosis," 13 June 2017 The ocular prosthesis can be nearly spherical, like the eyeball, or cup-like, to fit over an existing, malformed and nonfunctioning eye. — Christopher Wanjek, Fox News, "3D-printed 'eyes' could help blind children's faces grow naturally," 17 May 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'nonfunctioning.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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The first known use of nonfunctioning was in 1869

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nonfunctioning

adjective

non·func·tion·ing | \-ˈfəŋ(k)-sh(ə-)niŋ

Medical Definition of nonfunctioning

1 : not performing or able to perform a regular function a nonfunctioning thyroid

2 of a tumor : not secreting hormones or not secreting hormones which produce clinical symptoms a nonfunctioning pituitary adenoma nonfunctioning islet cell tumors