1. a postage stamp sold at a price higher than its postal value, with the extra money going to charity
Usage: philatelic

1. relating to or being a postage stamp sold above face value for charitable purposes
Usage: philatelic

Examples

• The post office issued a semipostal stamp to raise funds for breast cancer research.
• Collectors often seek out semipostal stamps for their charitable significance.
• The semipostal program has raised millions of dollars for various causes.
• She bought the semipostal stamp knowing the extra cost would help veterans.
• The first U.S. semipostal was issued in 1998 to benefit breast cancer research.
• Many countries have used semipostal stamps to support disaster relief efforts.