Definitions

1. adjective

Relating to or characteristic of the Triassic period, a geologic period from about 252 million to 201 million years ago.

“The triazoic rock formations were found to be of great interest to paleontologists.”

2. noun

A rock or a series of rocks formed during the Triassic period.

“The museum’s collection included a triazoic rock, which was over 200 million years old.”