WordWeb Online

1. Capable of being perceived as different or distinct
   "only the shine of their metal was distinguishable in the gloom"; "a project distinguishable into four stages of progress"; "distinguishable differences between the twins"
    
2. (often followed by 'from') not alike; different in nature or quality
   "plants of several distinguishable types";
   - distinct

See also: different, differentiable, discriminable

Antonym: undistinguishable

Encyclopedia: Distinguishable