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If A requires B, then B is the requirement. In this relationship what is A? In this context, I'm describing academic courses where B is a course that fulfills the requirements for course A.

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Related: english.stackexchange.com/questions/109995 – RegDwigнt Jun 18 '13 at 14:12
What is the context? A purchase? A contract? – bib Jun 18 '13 at 14:13
You could say A is the "dependent". Could you get away with calling it a "contingent"? – James M. Lay Nov 21 '14 at 9:04

At my university (in the United States Midwest), one would say "ECE 700 (A) is a follow-on course to ECE 600 (B)" and while this implies that B is a prerequisite, it doesn't necessarily require it.

(In my department at least, prerequisites were pretty flexible: transfer students, grad students, and students from other departments---as well as those just plain motivated---could very easily get them waived, so avoiding the suggestion of strict requirements was usually intended.)

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B is a prerequisite of A. That is common terminology for students registering for classes.

Prerequisite is defined as:

adj. Required or necessary as a prior condition: Competence is prerequisite to promotion.

n. Something that is prerequisite, as a course that is required prior to taking an advanced course.

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But the question is what word designates A's relationship to B? – StoneyB Jun 18 '13 at 14:42
......dependent – Edwin Ashworth Jun 18 '13 at 15:35
@StoneyB, Oooh...you're actually correct. I guess I addressed the OP's second sentence, but not the actual question. A class that has prerequisites might be called an advanced, more advanced, or upper level class. – JLG Jun 18 '13 at 17:05

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