analyten.
/ˈanəlʌɪt/, /ˈanl̩ʌɪt/, U.S. /ˈænəˌlaɪt/ Chemistry.
A substance that is analysed or determined, esp. quantitatively.
ΚΠ
1955 C. M. Crawford in Chem. & Engin. News 5 Dec. 5262/2 There is not, as far as I am aware, any short word denoting ‘the substance being analysed for’ in use... My proposal is that the word ‘analyte’ be understood to convey the above meaning.
1977 R. F. Adams in C. Giddings et al. Adv. in Chromatography XV. 140 Linearity of a detector is readily determined by injecting the analyte in progressively larger quantities onto the column.
2000 Cutting Edge: Encycl. Adv. Technol. 34/1 In the case of a biosensor that measures the level of a toxin in a water sample, the toxin is the analyte.
This is a new entry (OED Third Edition, November 2010; most recently modified version published online December 2021).
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n.1955