1. Fallen into disuse, or no longer in use: an obsolete word
2. out of date : an obsolete battleship
3. Biol. imperfectly developed in comparision with the corresponding character in other individuals, as of the opposite sex or of a related species.
carlsson said:Apple could just as well call the 5-7 year old computers "past" or "retired" models. Some people want to use the "antique" word for old computers, but most antique collectors would object about calling something newer than 40 years old for antique.