a. Obs. [f. L. spontāne-us + -AL.] Spontaneous, in various senses.
1602. Fulbecke, 1st Pt. Parall., 58. But curtesie is a free, spontaneal and ingenious quality, to which no inforcement can be used.
1653. R. G., trans. Bacon’s Hist. Winds, 361. Let the seventeenth Motion be the Spontaneall or Willing Motion of Rotation or wheeling.
1669. W. Simpson, Hydrol. Chym., 82. The occasional and spontaneal depravations of their ferments.
