1. situated away from or opposite to the mouth; relating to the end of an organism farthest from the mouth.
Usage: biology; zoology; technical

Examples

• In sea stars, the aboral surface is the side opposite the mouth.
• The aboral end of the sea cucumber contains the anus.
• Biologists examined the aboral region of the jellyfish to study its structure.
• The aboral pole of the embryo develops differently from the oral pole.
• Spines on the aboral surface of the sea urchin provide protection.