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Webster 1913 Edition

Adj.

Serving or tending to abbreviate; shortening; abridging.

Noun.

Shortening, contracting.

abbreviatory ‎(comparative more abbreviatory, superlative most abbreviatory)

Serving or tending to abbreviate; shortening; abridging. [Mid 19^th century.]^[1]

serving or tending to abbreviate; shortening; abridging

↑ Lesley Brown (editor), The Shorter Oxford English Dictionary, 5th edition (Oxford University Press, 2003 [1933], ISBN 978-0-19-860575-7), page 3