Where does “firepower” come from?

Firepower derives from English fire plus power, which comes from Middle English poer, Old French pooir, Proto-Germanic fōr, and Latin potens, ultimately from Proto-Indo-European pótis meaning master or able.

firepower (English): the capacity of a weapon to deliver fire onto a...

Definitions

  1. the capacity of a weapon to deliver fire onto a...

Ancestry of “firepower”, step by step

firepower traces back through two separate lines of ancestry.

via English Power

StepLanguageWordMeaning
1EnglishPowerA button of a computer, a video game console, or...
2Middle EnglishpowerAbility, power or capability
3Anglo-Normanpoer
4Latinpotēre
5Latinpossepresent active infinitive of possum  "to be able...
6Latinpotisable, capable, possible
7Proto-Italicpotismaster, in control of
8Proto-Indo-Europeanpótismaster, ruler; husband
9Proto-Indo-Europeanph₃tis
10Proto-Indo-Europeanpeh₃-to drink

via English fire

StepLanguageWordMeaning
1EnglishfireA chemical reaction involving the bonding of...
2Middle EnglishfierAlternative form of figer
3Old Englishfȳrfire
4Old EnglishfeorAlternative form of feorr; far
5Proto-Germanicferraifar, distant
6Proto-Indo-Europeanper-nóy
7Proto-Indo-Europeanper-before, in front; first; to go through
8Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Proto-Indo-European peh₃-
firepower — Etymology, Origin & Word History | Etymology Explorer