occur

4 definitions • 7 examples

(especially of accidents and other unexpected events) to happen:

An accident involving over ten vehicles has occurred in the east-bound lane.

If any of these symptoms occur while you are taking the medication, consult your doctor immediately.

to exist or be present in, among, etc.:

Violence of some type seems to occur in every society.

Minerals occur naturally in the earth's crust.

(esp. of unexpected events) to happen:

The incident occurred shortly after the plane took off.

to exist or be present:

The condition occurs primarily in older adults.

Helium occurs as a byproduct of natural gas.