Pronunciation: (van'ish), [key]
1. to disappear from sight, esp. quickly; become invisible: The frost vanished when the sun came out.
2. to go away, esp. furtively or mysteriously; disappear by quick departure: The thief vanished in the night.
3. to disappear by ceasing to exist; come to an end: The pain vanished after he took an aspirin.
4. Math.(of a number, quantity, or function) to become zero.
to cause to disappear.
Phonet.the last part of a vowel sound when it differs noticeably in quality from the main sound, as the faint (ē) at the end of the (ā) in the pronunciation of pain.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.