microbe (n.)
- adenovirus
- aerobe
- amoeba
- anaerobe
- bacillus
- bacteria
- bacterium
- being
- bug
- coccus
- creature
- crumb
- dot
- drop
- droplet
- echovirus
- enterovirus
- fleck
- flyspeck
- fungus
- germ
- gnat
- grain
- individual
- iota
- jot
- microorganism
- midge
- minim
- minutia
- mite
- mold
- mote
- ont
- organism
- organization
- particle
- pathogen
- picornavirus
- pinhead
- pinpoint
- point
- protozoa
- protozoon
- reovirus
- rhinovirus
- rickettsia
- scrap
- snip
- snippet
- speck
- spirillum
- spirochete
- spore
- staphylococcus
- streptococcus
- tittle
- vibrio
- virus
- zooid
- zoon