tectorial

noun, plural tec·tums, tec·ta [tek-tuh] /ˈtɛk tə/. Anatomy, Zoology.

1. a rooflike structure.

adj.

1. Of, relating to, or characteristic of a tectorium.

n. pl. tec•ta (-tə)

1. A rooflike structure of the body, especially the dorsal part of the mesencephalon.