A girl (who is usually studying Gender Studies) who aggressive adopts a lesbian identity late in the first year of University/College study. However by the time graduation rolls around (unlike an actual lesbian) they have abandoned this identity and are often engaged to a soon to be doctor, lawyer or accountant.

The term was used at least as far back as the early 2000s by the sex and relationships advice columnist Dan Savage.
"I'm going to come out to my folks at Christmas time."
"Maybe wait till you've had at least one serious girlfriend or even hooked up with another girl,? Make sure you aren't just a Second Semester Lesbian?"
by Lord Boofhead March 31, 2016
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a sad girl in college who is really going through it.
becky: “yo i’m about to have a hot girl semester this year”
susan: “imma have a sad girl semester hee hee
by nessybear27 October 19, 2019
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The tendency for hw, projects, tests, etc. to occur with disproportionate frequency in the final weeks of a semester.
You thought high school was tough, wait 'til you experience the end-of-semester snowball phenomenon in college.
by 4eggSAMple April 15, 2009
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When you blow off studying for a final in college because winter break is only a week away. Symptoms include but are not limited to: Not studying, going to basketball games, going out on the weekend, procrastinating, or being on Facebook for hours.

Very similar to high school Senioritis, except this type of illness plays an important role in decreasing your chances of getting into Grad school, internships, jobs etc.
Person 1: How did you do on the Government final?

Person 2: I probably failed. I came down with a case of Semesteritis so I partied all weekend.
by aStudentWhoGoesToUMD December 13, 2010
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A college student, usually with a major in philosophy or psychology, who attempts to argue with people citing information from the one semester of college they have taken.

A white college student who tries to treat people like they are dumb because they had such an "interesting" discussion on the evil corporations and therefore how to fix all the world's woes, but will never win an election because, "my dad won't buy me the presidency like Bush."
Guy 1: Dude, what you just don't realize is that the corporations are ruling everything. My professor opened up my eyes and blew my reality. Human beings are sheep.

Guy 2: What's your major?

Guy 1: I'm undeclared right now, but I'm thinking about majoring in philosophy with a minor in earth studies.

Guy 2: Fucking semesterer.
by jboneh February 20, 2010
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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.
by friskycurtain January 17, 2009
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when you're excited about a new semester starting and you buy all new clean journals, new supplies, you tell yourself that "this semester is going to be different", and then as you get further into the semester that high wears away, and you're back into you're old habits.
"Sis, this semester I will have all A's. Let's hope this new semester high last all semester."
"I'm not feeling this semester. I'm over the new semester high."
by ___okthen February 8, 2019
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