1. to make or become longer in distance, time, or duration

Examples

• The tailor will lengthen your pants by two inches.
• Days lengthen as spring approaches.
• She decided to lengthen her vacation by a few days.
• The shadow lengthens as the sun sets.
• Physical therapy helped lengthen his recovery time.
• The new highway will lengthen the commute for some drivers.
• Stretching exercises can lengthen tight muscles.