say it: den-suh-TAH-muh-tur
densitometer is a noun meaning "a measuring instrument for determining optical or photographic density". It carries 2 recorded senses.
a measuring instrument for determining optical or photographic density
a measuring instrument for determining density or specific gravity
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 densitometer 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.