Keto-carboxylic acid (English spelling) ketocarboxylic acid

...A general term for compounds that have both a carbonyl group C=O and a carboxyl group -COOH. It is also called a ketonic acid or a keto-carboxylic acid. Those in which both functional groups are directly bonded are called α-keto acids, and as their relative positions become more distant, they are called β-, γ-, or δ-keto acids.

*Some of the terminology explanations that mention "keto-carboxylic acid" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…カルボニル基C＝Oとカルボキシル基－COOHの両方をもつ化合物の総称。ケトン酸ketonic acid，ケトカルボン酸keto‐carboxylic acidともいう。両官能基が直接結合しているものをα‐ケト酸といい，これらの相対位置が離れるにしたがってβ‐，γ‐，δ‐ケト酸という。…

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出典｜株式会社平凡社世界大百科事典 第２版について | 情報