1. A marine mollusk with a large head, prominent eyes, and eight or ten arms bearing suckers, such as an octopus, squid, or cuttlefish.
Usage: zoology; countable

Examples

• The octopus is a highly intelligent cephalopod found in ocean waters worldwide.
• Cephalopods can change color and texture in seconds to blend with their surroundings.
• Squids are fast-moving cephalopods that hunt small fish and crustaceans.
• The cuttlefish, another cephalopod, uses its ink as a defense mechanism.
• Scientists study cephalopods to understand how they solve complex problems.
• Most cephalopods have excellent vision and can see in low light.