Where does the term "derivation path" originate

Question

BIP-32 never mentions the term "derivation path" but a quick search (https://bitcoinsearch.xyz/?search=derivation+path) returns a bunch of results so one must assume "derivation path" is part of the Bitcoin vernacular.

Two questions please:

1. Is "derivation path" the correct term?
2. If so, where did it come from (is it specified or just use colloquially)?

Thanks

Answer 1

Is "derivation path" the correct term and where did it come from

It is very widely used and you can see part of the origins in BIP-44 from 2014-04-24

Path levels

We define the following 5 levels in BIP32 path:

m / purpose' / coin_type' / account' / change / address_index

Apostrophe in the path indicates that BIP32 hardened derivation is used.

^{(My emphasis added)}