-atory Definition

ətôrē, ətōrē

suffix

Of or relating to.

Perspiratory.

American Heritage

Tending to.

Amendatory.

American Heritage

One that is connected with.

Reformatory.

American Heritage

Forms adjectives of, relating to, or connected with the thing specified.

Wiktionary

Forms nouns that represent things or places where a specified activity takes place.

Wiktionary

affix

Webster's New World

Origin of -atory

From Latin -ātōrius -ātōrium both from -ātor -ator

From American Heritage Dictionary of the English Language, 5th Edition
L -atorius < -ator, n. ending + -ius, adj. suffix

From Webster's New World College Dictionary, 5th Edition

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