The phrase “tertiary” is an adjective meaning “of third significance or rank”. It’s usually used to explain one thing that’s much less necessary than two different issues. For instance, you may say that your “tertiary” aim is to learn to play the guitar. Which means that studying the guitar is much less necessary to you than two different objectives, akin to ending faculty and getting a job.
The phrase “tertiary” will also be used to explain one thing that’s third in a sequence. For instance, you may say that the “tertiary” stage of a challenge is the testing part. Which means that the testing part is the third stage of the challenge, after the planning and growth levels.
