It's important to note that "with a" is not a standalone word or term with a specific historical origin. It's simply a grammatical construction used to indicate accompaniment or possession.
Here's a breakdown:
* "With" is a preposition that indicates association, accompaniment, or possession. It has been part of the English language for centuries.
* "A" is an indefinite article used before singular countable nouns. It also has a long history in English.
The phrase "with a" is simply the combination of these two elements, and its use can be traced back to the early development of the English language.