Decimetre, also spelled as decimeter, is a metric unit of length equal to one-tenth of a meter. Some synonyms for this unit of measure include ten centimeters, a hand's breadth, or a tenth of a yard. In medical fields, it is sometimes abbreviated as dm and is commonly used for measuring blood pressure, body measurements, and other medical procedures. Other related measurements include centimeters, millimeters, and meters, which are all derived from the original French metric system. Regardless of the synonym used, decimeters are prevalent in scientific and medical fields, as well as in everyday measurements where accuracy is essential.