ultramicroscope /ul-trə-mīˈkrə-skōp/

A microscope with strong illumination from the side, whereby the presence of ultramicroscopic objects can be observed through the scattering of light from them

ultramicroscopic /-skopˈik/ adjective

1. Too small to be visible under the ordinary microscope
2. Relating to ultramicroscopy

ultramicroscopy /-krosˈkə-pi/ noun

• siting
• sit in judgement
• sit in judgement on
• sit-ins
• sitiologies
• sitiology
• sitiophobia
• sitiophobias
• Sitka spruce
• sitologies
• sitology
• sit on
• sit on one's hands
• sit on someone's knee
• sit on the fence
• sit on the splice
• sitophobia
• sitophobias
• sit out
• sitrep
• sitreps
• sits
• sits vac
• Sitta
• sittar