də̇mī noun
( -es )
Etymology: Middle English, from demi half — more at demi-
1.
a. : a 15th century gold coin of Scotland weighing from 50 to 53 grains
b. : a unit of value equivalent to one demy coin
a gold half- demy was issued
2. : a scholar on the foundation at Magdalen college, Oxford, originally receiving half the allowance of a fellow
3. : a size of paper commonly 16 × 21, 15 1/2 × 20, or 17 1/2 × 22 1/2 inches