Is Bacteria Plural or Singular?
Bacteria is a plural noun, and comes from Latin. Bacterium is singular.
Bacteria is a plural noun, and comes from Latin. Bacterium is singular.
The singular of data is datum. Data is plural, and the more commonly used of the two.
The word and noun matrix originally comes from Latin, and has two accepted plurals: matrixes and matrices (matrices being the original pl. form).
The plural of radius is radii or radiuses. Radius is singular.