(mineralogy) A plagioclase feldspar, the fifth member of the Albite-Anorthite solid solution series. Bytownite is rare, and normally occurs in small grains in lime-rich igneous rocks. Clear pale ye...

A rare systemic infectious disease caused by the bacterium Tropheryma whipplei, primarily causing malabsorption but also affecting other parts of the body.

To have or produce a stinging sensation, as of nettles or urticating hair.

plural of thoroughbreed