I'm pretty sure that in this analogy, C# has the CLR.

That's all it takes. When you're writing about a niche topic (and nearly everything and anything interesting is a niche topic) then explain your jargon. It's considerate, reminds people who are familiar but might have forgotten, and introduces people unfamiliar with it to what your topic is.

Sometimes people want to understand what they're reading about and not have to play a little "guess what this is about" game. Clarity is a quality of good writing.