Muscle twitching is caused by minor muscle contractions in the area, or uncontrollable twitching of a muscle group that is served by a single motor nerve fiber.
What is the definition of 'matriculate'? The definition of matriculate is to be enrolled at university or college. It also describes a person who has matriculated, and other similar words include enroll and register. â¦ Answers Publisher
Definition of arrival for Students. 1  1 : the act of reaching a place. 2  2 : the time when something begins or happens the arrival of spring. 3  3 : a person or thing that has come to a place.