rickettsia means any of a group of gram-negative bacteria, of the genus Rickettsia, carried as parasites by ticks, fleas and lice, that cause typhus and other diseases. Lexicurio rates it Rare gem — a strength score of 84 out of 100.
noun
- Any of a group of gram-negative bacteria, of the genus Rickettsia, carried as parasites by ticks, fleas and lice, that cause typhus and other diseases.
- Any bacterium of the order Rickettsiales.