Is exponentiate a valid verb tense of exponentiation?

'Exponentiate' seems to fail spell checks and it doesn't appear to be valid in any official dictionaries that I can see. Though I do I see it used from time to time and see it in questionable "wiki" type online dictionaries.

I am interested to know if 'exponentiate' is a valid verb tense and perhaps just not yet codified - or if there's a grammatical (or semantic) reason that makes it invalid.

Just curious!

Since the Oxford English Dictionary is behind a paywall, I can't blame you for not surfacing this:

exponentiate, v.

Mathematics.

1. intransitive. To increase exponentially; also, more generally, to exhibit specified asymptotic behaviour as some limit is approached.

2. transitive. To raise e or some other base (BASE n.¹ 20) to the power of; to subject to exponentiation. Also absol.

_{Source: Oxford English Dictionary (login required)}

Here are a couple of usage examples supplied . . .

Intransitive:

_{1971   Physical Rev. D. 3 970   We find that the leading Regge-pole term arising from single-ladder-exchange exponentiates.}

Transitive:

_{1978   Physics Lett. A. 64 477/2   By solving the operator equations in their full nonlinear form..we are able to exponentiate the logarithmic terms into power law singularities.}

Go forth and exponentiate.