A nice batch! A couple of nitpicks:
air-to ground needs another hyphen.
cyclotron should be bold, not ital.
And a couple of random reactions:
defibrillation, n. Fibrillation is 1) the state of being divided into fibers
I did not know that!
footy | footie Also called footsy or footsie, this word for flirting with the feet
I am familiar with this only as a U.K. diminutive for football (= soccer); I wonder when it’s first attested in that sense?