opacimeter
/ˌəʊpəˈsɪmɪtə/ /əʊˈpasɪmiːtə/noun
An instrument for measuring the opacity of a body or substance, especially by measuring the amount of light it reflects.
Origin
Early 20th century; earliest use found in Chemical Abstracts. From opac- + -imeter, after French opacimètre.
- rubredoxin
- rubrene
- rub resistance
- rub-resistant
- rubric
- rubrical
- rubricality
- rubrically
- rubricate
- rubrication
- rubricator
- rubrician
- rubricism
- rubricist
- rubricize
- rubricked
- rubrification
- rubriform
- rubrify
- rubrish
- rubrisher
- rub salt into the (or someone's) wound
- rub shoulders (or elbows)
- rub shoulders with
- rub someone (or rub someone up) the wrong way