infinitesimal (n.)
infinitesimal (adj.)
- atomic
- corpuscular
- embryonic
- evanescent
- germinal
- granular
- impalpable
- imperceptible
- imponderable
- inappreciable
- indiscernible
- intangible
- invisible
- microcosmic
- microscopic
- molecular
- subatomic
- tenuous
- thin
- ultramicroscopic
- unseeable
