† hydro-ˈacid Chem. Obs.
= hydracid.
| 1845 Todd & Bowman Phys. Anat. I. 5 Hydrogen would be [united] to a simple or compound radicle (chlorine or cyanogen), to form a hydro-acid. c 1865 G. Gore in Circ. Sc. I. 226/2 The hydro-acids—hydrochloric acid, for example. |