a. Obs. [f. L. acid-us sour + ole-um oil + -OUS.] An oily liquid of acid character, as vitriol.
1674. Grew, Anat. Plants, III. 2. iv. § 15. A Rosin, is originally a Turpentine, or Acidoleous Liquor. Ibid. (1676), III. ii. (1682), 259. Rosin and Mastick seem to be more purely acidoleous gums.
