Obs. Forms: 6–7 fallacian, -ion, fallation. [Formation not quite clear; f. FALLACY or its source, the ending being confused with -ATION; or f. FALLACIOUS, on the analogy of suspicious, suspicion.] = FALLACY 3.

1

a. 1568.  Ascham, Scholem., II. (Arb.), 132. Tomitanus … hath expressed euerie fallacion in Aristotle, with diuerse examples out of Plato.

2

1588.  Fraunce, Lawiers Log., I. iv. 26 b. Fallacians bee eyther in the woord, or in the reason.

3

1610.  Healey, St. Augustine, Of the Citie of God, 309. Euthydemus, whence Aristotle had many of his fallacians.

4