Pronunciation: (van'ish),[key] —v.i. 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.
—v.t. to cause to disappear.
—n. 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.