hydroxy acid

American  

noun

1. an organic acid containing both a carboxyl and a hydroxyl group.

2. any of a class of organic acids containing a hydroxyl group and showing properties of both an alcohol and an acid.

---

hydroxy acid British  

noun

1. any acid, such as sulphuric acid, containing hydroxyl groups in its molecules

2. any of a class of carboxylic acids that contain both a hydroxyl group and a carboxyl group in their molecules

---

Etymology

Origin of hydroxy acid

First recorded in 1895–1900

Example Sentences

Superfrau contains lactic acid, an alpha hydroxy acid found in moisturizers and serums.

From New York Times • Jan. 20, 2022

Alpha hydroxy acid powers the Insta Swipe peel pads, $22, which are compostable and biodegradable.

From New York Times • Jan. 29, 2020

It also features salicylic acid, a beta hydroxy acid.

From New York Times • Jun. 25, 2018

The pumpkin enzyme in this treatment exfoliates, while alpha hydroxy acid peels, and aluminum oxide polishes, tackling a dull complexion.

From Forbes • Oct. 28, 2014

You'd think, since it's a hydroxy acid and an antioxidant, that it would prove ideal.

From Time Magazine Archive