factor

noun
UK /ˈfæk.tər/
US /ˈfæk.tɚ/

A factor is one thing that helps make something happen.

The sunny weather was a big factor in our fun picnic.


OTHER MEANINGS

2. In math, a factor is a number that divides another number evenly.

Three is a factor of twelve because it goes into twelve four times.

3. A factor is a person or company that buys and sells goods for someone else.

The factory hired a factor to sell its products overseas.

4. In biology, a factor is a gene or something in the body that affects how it works.

Blood clotting depends on a special factor in the blood.