Promptuary Definition

noun

(arithmetic) A device described in Napier's treatise Rabdologiæ, consisting of a large set of strips used to multiply multi-digit numbers more easily than Napier’s bones.

Wiktionary
adjective

(obsolete) Of or relating to preparation.

Wiktionary

Other Word Forms of Promptuary

Noun

Singular:
promptuary
Plural:
promptuaries

Origin of Promptuary

  • Latin promptuarium, storehouse

    From Wiktionary

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