Meaning & Definition of Prolong in English

1. Lengthen in time

• Cause to be or last longer

• "We prolonged our stay"

• "She extended her visit by another day"

• "The meeting was drawn out until midnight"

2. Lengthen or extend in duration or space

• "We sustained the diplomatic negotiations as long as possible"

• "Prolong the treatment of the patient"

• "Keep up the good work"