Chem. In comb. = ACETIC, ACETYL before a consonant (cf. ACET-), as in aceto-chloride, aceto-nitril, acetophenone, aceto-sodacetate, etc.
1880. trans. Wurtz, Atom. Theory, 180. This is the case in the combinations described by Carius under the name of plumbic aceto-chlorhydrin, aceto-bromhydrin, and aceto-iodhydrin.