When it comes to measuring one's waist, there are a variety of synonyms that can be used to describe the process. These may include terms like waist circumference, waistline measurement, abdominal girth, and mid-section sizing. Other similar phrases might include belly measurement, hip-to-waist ratio, or waist-to-hip ratio. Regardless of which term is used, a waist measure is an important tool for determining overall health and fitness, particularly as it relates to the risk of obesity, heart disease, and other related conditions. Whether for medical or personal reasons, measuring the waistline is an important step on the road to a healthier lifestyle.