say it: AH-kyuh-puhn-see
occupancy is a noun meaning "an act of being a tenant or occupant". It carries 2 recorded senses.
an act of being a tenant or occupant
the act of occupying or taking possession of a building
“occupation of a building without a certificate of occupancy is illegal”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for occupancy come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.