Sarcina is a Latin word meaning a marching pack as carried by Roman Legionaries, the heavy infantry of the Roman legions.

A genus of bacteria found in various organic fluids, especially in those those of the stomach, associated with certain diseases. The individual organisms undergo division along two perpendicular partitions, so that multiplication takes place in two directions, giving groups of four cubical cells. Also used adjectively; as, a sarcina micrococcus; a sarcina group.