Real Dictionary

Anglo in American English
a white citizen or inhabitant of the U.S. who is of non-Hispanic descent
of or relating to Anglos
adjective: of, pertaining to, or characteristic of Anglos
noun: a White American of non-Hispanic descent, as distinguished esp. from an American of Mexican or Spanish descent

Anglo in British English
noun: a White inhabitant of the United States who is not of Latin extraction

Anglo-
Anglo- combines with adjectives indicating nationality to form adjectives which describe something connected with relations between Britain and another country.

Anglo- in American English
English, English and
combining form: a combining form of English

Anglo- in British English
combining form: denoting English or England