The prefix "deci" means one-tenth, so a decimeter is equal to one-tenth of a meter or 10 centimeters.
In written form, the symbol "dm" is usually used to represent decimeter. When reading it out loud, you can say "decimeter" or "deci-meter".
In scientific or technical contexts, the symbol "dm" is commonly used in formulas or equations to represent a decimeter. It is important to be familiar with these symbols when working with measurements and units.
Overall, it is important to remember that "dm" represents decimeter, which is equivalent to one-tenth of a meter or 10 centimeters.