1. plural of subumbrella; the concave undersurface of a jellyfish bell
Usage: marine biology

Examples

• The marine biologist examined the subumbrellas of several jellyfish specimens.
• Muscle contractions in the subumbrellas propel jellyfish through the water.
• The subumbrellas showed distinctive patterns that helped identify the species.
• Researchers studied how the subumbrellas contract during swimming movements.
• The transparent subumbrellas were clearly visible under the microscope.