1. a substance or feed added to food to increase its fat content or caloric value
2. an animal, especially livestock, being fattened for market
Usage: agriculture
3. a person or thing that fattens

Examples

• The farmer used a grain fattener to prepare the cattle for sale.
• Corn is a common fattener used in livestock operations.
• The fatteners were kept in a separate pen before market day.
• Adding oil as a fattener increased the caloric density of the feed.
• Young pigs destined to be fatteners are separated early in the season.