Definitions

1. noun

A type of fossilized or rock-like structure resembling a caecum or a cecum, especially in the form of a long, narrow tube.

“The scientists discovered a unique cestoid fossil in the ancient rock formation.”

2. adjective

Relating to or resembling a caecum or a cecum, especially in being a long, narrow tube.

“The cestoid structure of the digestive tract is essential for nutrient absorption.”