form, variant, strain, var. -- ((biology) a group of organisms within a species that differ in trivial ways from similar groups; "a new strain of microorganisms")
version, variant, variation, edition -- (something a little different from others of the same type; "an experimental version of the night fighter"; "a variant of the same word"; "an emery wheel is the modern variation of a grindstone"; "the boy is a younger edition of his father")
Overview of adj variant
The adj variant has 2 senses
variant -- (differing from a norm or standard; "a variant spelling")
variant -- (exhibiting variation and change; "letters variant in size")