1. Plural of megagamete; large gametes (reproductive cells) produced by female organisms, particularly in plants and some algae; the female counterpart to microgametes.
Usage: biology; technical; plural form

Examples

• In many algae species, megagametes are significantly larger than the microgametes produced by males.
• The fusion of megagametes and microgametes initiates sexual reproduction in these organisms.
• Botanists study megagametes to understand the reproductive mechanisms of flowering plants.
• The megagametes contain abundant cytoplasm and nutrients to support early embryonic development.