creatinine

[ kree-at-n-een, -in ]

noun

, Biochemistry.

1. a crystalline end product of creatine metabolism, C 4 H 7 N 3 O, occurring in urine, muscle, and blood.

creatinine

/ kriːˈætəˌniːn /

noun

1. an anhydride of creatine that is abundant in muscle and excreted in the urine

creatinine

/ krē-ăt′n-ēn′,-ĭn /

1. A compound formed by the metabolism of creatine, found in muscle tissue and blood and normally excreted in the urine as a metabolic waste. Measurement of creatinine levels in the blood is used to evaluate kidney function. Chemical formula: C 4 H 7 N 3 O.

Word History and Origins

Origin of creatinine¹

First recorded in 1850–55; from German Kreatinin, equivalent to kreatin creatine ( def ) + -in -ine ²( def )

Word History and Origins

Origin of creatinine¹

C19: from German Kreatinin, from Kreatin creatine + -in -ine ²

Example Sentences

Creatinine is plugged into the formula along with age, sex and race.

From ProPublica

Creatine and creatinine also seem to lessen in amount, but of the extent of this change I am not as yet fully informed.

From Project Gutenberg

The creatinine was estimated in two cases and was found to be 2.0 mg.

From Project Gutenberg

The precipitate contains the picrate of trimethylenediamine, mixed with the picrates of cadaverine and creatinine.

From Project Gutenberg

Foremost among them are uric acid, creatinine, and the coloring-matter.

From Project Gutenberg