ppl. a. [UN-1 8.] † a. Not certified or apprised. Obs. b. Not ascertained or known.
1628. in Foster, Eng. Factories India (1909), III. 193. What is become of Beale, whether living or dead, we are yett unascertained.
1751. Harris, Hermes, II. i. (1765), 217. The Article (A) leaves the Individual itself unascertained, whereas the Article (The) ascertains the Individual also.
1784. Cook, Third Voy., VI. iv. III. 269. The only part of the Russian empire that now remains unascertained.
1815. J. Smith, Panorama Sci. & Art, II. 319. The standard temperatures desired, remained unascertained till the time of Newton.
1879. St. Georges Hosp. Rep., IX. 127. An unascertained quantity of oxalic acid and white precipitate.