[mod. f. AERO- + Gr. μέτρον measure: see -METER. Cf. mod.Fr. aéromètre.] An instrument for ascertaining the weight or density of air and gases.
1794. G. Adams, Nat. & Exp. Philos., III. xxxiv. 390. Comparing fluids with each other by means of the hydrometer or aerometer.
1839–47. Todd, Cycl. Anat. & Phys., III. 32/2. Attached to the same mercurial trough is placed a little apparatus termed an aerometer.
