1. lying flat, especially face-down on the ground or a surface

1. past tense of 'prone': to place or position (someone) face-down
Usage: less common usage; 'prone' as a verb is rare in modern English

Examples

• The injured athlete was proned on the stretcher for transport.
• The soldier remained proned behind the barrier during the drill.
• She was found proned on the floor after the fall.
• The patient was proned to help with breathing difficulties.
• He lay proned in the grass, watching the clouds.