1. One that consumes, especially one that acquires goods or services for direct use or ownership rather than for resale or use in production and manufacturing.
2. A heterotrophic organism that ingests other organisms or organic matter in a food chain.

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.