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too small to be seen without an ultramicroscope
Definition that contains ultramicroscopic
- virus (virology) ultramicroscopic infectious agent that replicates itself only within cells of living hosts; many are pathogenic; a piece of nucleic acid (DNA or RNA) wrapped in a thin coat of protein
- aerosolized in the form of ultramicroscopic solid or liquid particles dispersed or suspended in air or gas
- aerosolised in the form of ultramicroscopic solid or liquid particles dispersed or suspended in air or gas