- (biology) Imperfectly developed; not very distinct.
- (of words, equipment, etc.) No longer in use; gone into disuse; disused or neglected (often by preference for something newer, which replaces the subject).
"It is speculated that, within a few years, the Internet's speedy delivery of news worldwide will make newspapers obsolete."
- (transitive, US) To cause to become obsolete.
"This software component has been obsoleted."
"We are in the process of obsoleting this product."