mi·cro·den·si·tom·e·ter 
(mī′krō-dĕn′sĭ-tŏmĭ-tər)
(mī′krō-dĕn′sĭ-tŏmĭ-tər)n.
An extremely sensitive densitometer used to measure optical densities of photographic plates or film to detect small details, such as spectral lines invisible to the human eye.
- heterochronous
- heterochrony
- heterocycle
- heterocyclic
- heterocyst
- heterodactyl
- heterodactylous
- heterodactyly
- heterodox
- heterodoxy
- heterodyne
- heteroecious
- heteroecism
- heterogamete
- heterogametic
- heterogamic
- heterogamous
- heterogamy
- heterogeneity
- heterogeneous
- heterogeneously
- heterogeneousness
- heterogenic
- heterogenous
- heterogenous