likely or liable to suffer from, do, or experience something unpleasant or regrettable

farmed fish are prone to disease

he is prone to jump to conclusions

the player was written off by many as too injury-prone

lying on one's front with face downwards

I was lying prone on a foam mattress

a prone position

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