Difference between Bacterium and Bacteria

Bacterium

Part of speech: noun

Definition: A single celled organism with no nucleus.

Bacteria

Part of speech: noun

Definition: A type, species, or strain of bacterium.A type, species, or strain of bacteriumA type, species, or strain of bacterium.A derisive term for a lowlife or a slob (could be treated as plural or singular).An oval bacterium, as distinguished from a spherical coccus or rod-shaped bacillus

Example sentence: Understanding how Cas9 is able to locate specific 20-base-pair target sequences within genomes that are millions to billions of base pairs long may enable improvements to gene targeting and genome editing efforts in bacteria and other types of cells.