A size of paper between royal and crown. Its size is 22 1/2 in.
x 17 1/2 in. It is from the French word demi (half), and means
demi-royal (a small royal), royal being 25 in. x 20 in. The old
watermark is a fleur-de-lis.
of Magdalene College, Oxford, is a “superior” sort of scholar, half
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894