1. existing or occurring underground
Usage: botanical; geological
2. germinating with cotyledons remaining below ground
Usage: botanical

Examples

• The hypogeal roots of the oak tree extended deep into the soil.
• Many desert plants have hypogeal storage organs to survive drought.
• Hypogeal germination keeps the seed leaves protected underground.
• The botanist studied hypogeal fungi in the forest floor.
• Peanuts exhibit hypogeal germination, unlike beans which are epigeal.
• Hypogeal insects rarely venture to the surface during daylight.