a.  1.  Of or pertaining to fractions or a fraction; constituting a fraction;  
2.  Relatively small; inconsiderable; insignificant;

Adj.  1.  fractional  constituting or comprising a part or fraction of a possible whole or entirety; "a fractional share of the vote"; "a partial dose" Antonyms: whole  including all components without exception; being one unit or constituting the full amount or extent or duration; complete; "gave his whole attention"; "a whole wardrobe for the tropics"; "the whole hog"; "a whole week"; "the baby cried the whole trip home"; "a whole loaf of bread" 