Semestrial 

Working at community college and having another job.
Because at community college you can’t work holiday seasons, you can only work certain times throughout the semester.
Basically the school version of a seasonal job.

Yeee bro the job I got right now is semestrial so imma be available all summer long!

Semestrial by G STENDO August 28, 2019

semesteral friends 

People you get to know in your classes which you never hang out with, see, or hear from after the semester ends.

This can apply to both high school and college classes.

Harry: You talked to Glenn any over Winter Break?

Alan: Actually I haven't. We really were just semesteral friends.

semesteral friends by friskycurtain January 17, 2009

Semetria 

a person that will love u no matter what that will show u her true colors as a Gemini 😶she caring and truthful as a friend and as a lover to her gf/bf

OMG SEMETRIA IS MY BESTIE

Semetria by Goofiest November 25, 2021

Semestriversary

The 6th monthiversary. Coined from semester and anniversary. Sometimes counting each monthiversary get too much but your anniversary is still a while away, so you count every 6 months.

A: "Happy 90th monthiversary!"

B: "Happy 15th semestriversary!"

*lots of smooching out*

C: "Isn't it time you guys quit it and just counted years? and got a room...seriously."

Semestriversary by Will [Neffers] December 1, 2011