| 释义 |
pell1 /pɛl/Now historical noun1A parchment; specifically either of two rolls of parchment for recording receipts (called in Latin the pellis receptorum) and issues (called in Latin the pellis exituum), formerly kept at the Exchequer. Now historical. 2With the and capital initial. The Office of the Exchequer in which these rolls were kept. Now historical. Origin Late Middle English (in an earlier sense). From Anglo-Norman pel, peel, peau, etc., and Middle French pel, peau, etc. (French peau) animal skin or hide, human skin, parchment from classical Latin pellis skin, leather, parchment from the same Indo-European base as fell. pell2 /pɛl/(also pel) Chiefly historical nounA stake or post at which to practise sword-strokes. Origin Early 19th century; earliest use found in Joseph Strutt (1749–1802), antiquary and engraver. From Anglo-Norman and Old French, Middle French pel peel; for the specifically sense compare pale. Pell3 /pɛl/Mathematics nounIn full Pell equation, Pell's equation. A Diophantine equation of the form y 2 − ax 2 = 1, where x and y are integer variables, and a is an integer constant. Origin Early 20th century; earliest use found in Encyclopaedia Britannica. Fromthe name of John Pell. |