say it: kuh-PAS-uh-tuhns
capacitance is a noun meaning "an electrical phenomenon whereby an electric charge is stored". It carries 2 recorded senses.
an electrical phenomenon whereby an electric charge is stored
an electrical device characterized by its capacity to store an electric charge
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 capacitance 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.