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Webster 1913 Edition

Adj.

[L.

postulatorius

Of the nature of a postulate.

Sir T. Browne.

Adj.

Assuming without proof.

Assumed without proof.

postulatory ‎(comparative more postulatory, superlative most postulatory)

Of the nature of a postulate.
(Can we find and add a quotation of Sir Thomas Browne to this entry?)