A Non Resident Indian has been defined as a person resident outside India. Person resident outside India under FEMA has been defined as a person who is a non resident India.

Person resident in India :-

1) a person residing in India for more than one hundred and eighty two days during the course of the preceding financial year but does not include
  A. a person who has gone out of India or who stays outside India, in either case
    a) for or on taking up employment outside India, or
    b) for carrying on outside India a business or vocation outside India, or
    c) for any other purpose, in such circumstances as would indicate his intention to stay        outside India for an uncertain period ;
  B. a person who has come to or stays in India, in either case, otherwise-than ­
    a) for or on taking up employment in India, or
    b) for carrying on in India a business or vocation in India, or
    c) for any other purpose, in such circumstances as would indicate his intention to stay in        India for an uncertain period;

2) any person or body corporate registered or incorporated in India,

3) an office, branch or agency in India owned or controlled by a person resident outside     India,