What is the Latin word for granary?

The usual Latin words for “granary” are grānārium, horreum. The right choice depends on the sense; see the distinctions below.

English → Latin

“granary” in Latin

grānāriumgranary horreumstorehouse; barn, granary

The English word granary itself goes back to Latin grānum, through grānārium.

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

granary

granarium (the barn of a farmer): horreum (a public magazine). (The words are found in this connection and order.) cella et horreum: rei frumentariae subsidium (a store, only resorted to in case of want or necessity). Marcus Cato the wise, called Sicily the granary of our state, M. Cato sapiens cellam penariam reipublicae nostrae Siciliam nominavit (cellam penariam, the store-room of a private house): Capua (is) the granary of the whole district of Campania, Capua cella et horreum Campani agri.

Quick answer

What is the Latin word for granary?: The usual Latin words for “granary” are grānārium, horreum. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.