from Wiktionary, Creative Commons Attribution/Share-Alike License
- adv. So as to vanish, or appear to vanish, especially very small, very rare.
from The Century Dictionary and Cyclopedia
- In a vanishing manner; so as to vanish; imperceptibly: as, a certain probability is vanishingly small.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adv. so as to disappear or approach zero
vanishing + -ly (Wiktionary)