The definition of vacant is empty.(adjective)
When an apartment is for rent and no one is living there, this is an example of an apartment that would be described as vacant.
See vacant in Webster's New World College Dictionary
Origin: OFr < L vacans, prp. of vacare, to be empty
See vacant in American Heritage Dictionary 4
Origin: Middle English
Origin: , from Old French
Origin: , from Latin vacāns, vacant-
Origin: , present participle of vacāre, to be empty; see euə- in Indo-European roots.
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