turn (a patient) so as to lie face down for a period of time in order to improve the exchange of oxygen and carbon dioxide in the lungs during mechanical ventilation

twice a day he was proned to try and get as much oxygen into his body as possible

proning a patient can take a minimum of six people

proning is a vital technique used in the treatment of Covid-19

drop into a prone position; lie face down

they searched him and told him to prone out on the ground next to his car

I had nine people proned out on the ground