Learner's definition of MOBILITY
the ability or tendency to move from one position or situation to another usually better one
Social mobility is often affected by a person's birth, income, and education.
The degree of economic mobility is different in different societies.
the career mobility of women
the geographic mobility of a country's workers [=the tendency of workers to move from one place to another]
ability to move quickly and easily
The army has improved its weapons and increased its mobility since the last war.
He was a great football player known for his mobility on the field.
She lost mobility in her left hand.
elderly people with limited mobility