The Full form of O/A is old age, or O/A stands for old age, or the full name of given abbreviation is old age.
O/A (old age)
old age is known as O/A.
O/A all full forms
All the above full forms are related to O/A. A little information is given about one of these full forms. If you are not satisfied with the information given about 'old age (O/A)', then comment. Or if you know more about 'old age (O/A)', then write.