How long is a palm?

A palm, typically defined as the width of an adult human hand, is generally about 4 to 5 inches (10 to 12 centimeters) wide. However, the term can also refer to the palm of a tree, which can vary significantly in size depending on the species. In either context, the length can vary, but the human palm generally measures around 7 to 8 inches (18 to 20 centimeters) from the wrist to the tip of the fingers.