from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A number that is rational or irrational, not imaginary.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An element of the set of real numbers.; the set of real numbers include the rational numbers and the irrational numbers, but not all complex numbers.
- n. A floating-point number.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. any rational or irrational number
Sorry, no etymologies found.
Peuples de l’Europe, tom.vi. p. 332) has curiously ascertained the real number of these auxiliaries.