This definition of retronym seems to be the most accepted: "retronym (jargon) -- A term invented to distinguish a subclass of things from new members of the superclass, where the distinction was previously not necessary, since the old subclass had been all there was of the superclass.
Lord Crawford was a distinguished representative of a very ancient family.
He leaves a distinguished legacy of community service.
Fetter was a distinguished historian of economic thought and the father of another distinguished economic historian, Frank Whitson Fetter.
Real-time guarantee is a distinguished feature of micROS.
DHC is a distinguished professor of Chemical Engineering Department at National Cheng Kung University (Taiwan).
He is a distinguished collector of Japanese art.
Allen joins a distinguished list of guests at Disrupt NY.
There is a distinguished collection of learned patterns; all other patterns are called derived.
D-HC (PhD) is a distinguished professor of Chemical Engineering Department at National Cheng Kung University (Taiwan).
