1. Reproducing by the union of two different types of gametes; requiring fertilization from another individual or type.
Usage: biology; formal
2. Of or relating to flowers that have stamens and pistils of different lengths, promoting cross-pollination.
Usage: botany; technical

Examples

• Many flowering plants are heterogamous, requiring pollen from a different plant to produce seeds.
• Heterogamous species have evolved mechanisms to prevent self-fertilization.
• The heterogamous flowers of primrose plants have styles of different lengths.
• In heterogamous reproduction, genetic diversity is maintained through cross-breeding.
• Heterogamous organisms depend on external factors like insects or wind for pollination.