1. the act or process of making something straight

1. present participle of straighten; making or becoming straight

Examples

• She is straightening her hair with a flat iron.
• The straightening of the road will reduce accidents.
• He spent the morning straightening up his room.
• The dentist recommended braces for straightening her teeth.
• The straightening process took several hours to complete.
• I’m straightening the picture frame on the wall.
• The physical therapist helped with straightening his posture.