a kind of long bacteria, one of which causes disease

bacteria

a small room for one person (especially in a prison or a monastery)

smallest living organism

to be in a state of (social or political or personal) excitement or trouble; (to cause a substance) to change chemically through the action of organic bodies (especially yeast) that change glucose into alcohol, e.g. in beer, wine

substance causing chemicals to split into simpler substances

a very small organism (in the air, food etc) that can cause disease

microscopic organism, often causing illness

any very small creature, especially one causing disease

bacteria