a. [f. EX- pref.1 + TERRESTRIAL.] Originating or located outside the earth. Cf. extra-terrestrial: see EXTRA- pref.
1870. Proctor, Other Worlds, xii. 279. The light of this nebula, unlike any other ex-terrestrial light. Ibid. (1871), Light Sc. (1879), 110. Ex-terrestrial observers, such as these, may know much more.
