A retronym is a word coined to distinguish something new from an older, more generic version, such as electric guitar or clock radio. A couple of new retronyms are fine water, or “unprocessed water that reflects a region’s terroir” and water...
The tiny guppy, also called the millionfish or the rainbow fish, is named for amateur naturalist and Trinidad school superintendent Robert John Letchmere Guppy. This is part of a complete episode. Transcript of “How the Guppy Got its...

