One of the mysteries of the English language finally explained.
Of a leaf: having veins arising on each side of a midrib like barbs from the shaft of a feather; pinnately veined.
Mid 19th century; earliest use found in John Balfour (1808–1884), botanist. From classical Latin penni-, combining form of penna feather + nerve + -ed, after either French penninerve or scientific Latin penninervis.
In this article we explore how to impress employers with a spot-on CV.