Noun- One of two or more numbers or expressions that are multiplied to obtain a given product. For example, 2 and 3 are factors of 6, and a + b and a - b are factors of a2 - b2.
- A substance found in the body, such as a protein, that is essential to a biological process. For example, growth factors are needed for proper cell growth and development.
Verb To find the factors of a number or expression. For example, the number 12 can be factored into 2 and 6, or 3 and 4, or 1 and 12.