a. [see CO- 2.] Occurring, taking place, or existing at the same instant; exactly simultaneous.
1768–74. Tucker, Lt. Nat. (1852), I. 503. His acting and His complete knowledge of the manner most expedient to be followed in acting are co-instantaneous.
1794. G. Adams, Nat. & Exp. Philos., I. v. 188. Which of these is first we cannot say, for they seem co-instantaneous.
1823. Lamb, Elia, Ser. I. xxi. (1860), 166. A pun, and its recognitory laugh, must be co-instantaneous.
1860. Patmore, Angel in Ho., III. Faithful for Ever, 228. A blinding flash, And close, co-instantaneous crash.
Hence Coinstantaneity, Coinstantaneously adv., Coinstantaneousness.
1807. Southey, Espriella’s Lett. (1814), III. 127. Coinstantaneously.
1809–10. Coleridge, Friend (ed. 3), III. 251. They started up … like men out of an ambush … so co-instantaneously did they all obey the summons. Ibid. (1818), Lit. Rem. (1847), I. 222. The co-instantaneity of the plan and the execution.
1845. Darwin, Voy. Nat., ix. (1852), 202. Sometimes all … moved together coinstantaneously.
1848. Hampden, Bampt. Lect. (ed. 3), 124. Notions of … priority and posteriority, co-instantaneousness, consecutiveness.
