variant
1. vari.ant \'ver-e--*nt, 'var-\ aj obs 1: VARIABLE 2: manifesting
variety, deviation, or disagreement 3: varying usu. slightly from the
standard form {~ readings}
2. variant n : one of two or more persons or things exhibiting usu. slight
differences : as : one that exhibits variation from a type or norm : one
of two or more different spellings or pronunciations of the same wo rd
Webster's English Dictionary