Description
The spec doesn't really define the term "intrinsic".
It does define "well-known intrinsic":
built-in objects that are explicitly referenced by the algorithms of this specification
which suggests that "intrinsic" simply means "built-in object".
Alternatively, one could reasonably infer that an intrinsic is any object created by the CreateIntrinsics operation. I believe that all such objects are built-in objects, but the converse is not quite true. That is, the set of objects created by CreateIntrinsics is a subset of the built-in objects (for a given realm). For example, each invocation of MakeArgGetter creates a built-in function object, and that happens outside of CreateIntrinsics.
So: is a function created by MakeArgGetter an intrinsic? My guess is that it isn't, i.e. that the latter inference is the correct one. Not a big deal, but it would be nice to know.
While I'm in the neighborhood, 6.1.7.4 Well-Known Intrinsic Objects says:
Well-known intrinsics are built-in objects that are explicitly referenced by the algorithms of this specification and which usually have realm-specific identities. Unless otherwise specified each intrinsic object actually corresponds to a set of similar objects, one per realm.
I'm dubious about the "usually" and "Unless otherwise specified". Are there any (well-known) intrinsic objects that aren't tied to a specific realm? CreateIntrinsics doesn't seem to think so.