What is the term for a physical quantity that has magnitude but no direction?

The term that describes a physical quantity with magnitude but no direction is "scalar." Scalars are essential in various fields, including physics and engineering, because they represent quantities such as temperature, mass, volume, and energy that are fully described by a numerical value alone.

In contrast, a vector is a quantity that has both magnitude and direction, such as force or velocity, making it distinct from scalars. The resultant is a specific vector quantity that combines multiple vectors, while concurrent refers to forces or vectors that meet at a common point. Understanding the distinction between scalar and vector quantities is fundamental in physics as it influences how various physical phenomena are analyzed and represented mathematically.