IPA: //prɒsˈtreɪʃən//
KK: /prɑˈstreɪʃən/
The act of lying flat on the ground, often as a sign of submission or exhaustion, or the state of being extremely weak or tired.
After the long hike, I fell into a state of prostration and couldn't move for a while.
Prostration is formed from "pro-" (meaning forward) and "sternere" (meaning to spread out or lay down). The word describes the act of lying flat or spreading oneself out, often in a gesture of submission or exhaustion.
Think of 'laying down' ('sternere') 'forward' ('pro-') — this helps you remember that prostration means to lie flat, often in submission.