Strong's Concordance

Original word: τεφρόω
Transliteration: tephroó
Definition (short): burn
Definition (full): to burn to ashes

NAS Exhaustive Concordance

Word Origin: from a prim. word tephra (ashes)
Definition: to burn to ashes
NASB Translation: reducing...to ashes (1).
NAS Exhaustive Concordance of the Bible with Hebrew-Aramaic and Greek Dictionaries.
Copyright © 1981, 1998 by The Lockman Foundation.
All rights reserved Lockman.org

Strong's Exhaustive Concordance

From tephra (ashes); to incinerate, i.e. Consume -- turn to ashes.
KJV: And turning the cities of Sodom and Gomorrha into ashes condemned them with an overthrow, making them an ensample unto those that after should live ungodly;
NASB: and if He condemned the cities of Sodom and Gomorrah to destruction by reducing them to ashes, having made them an example to those who would live ungodly lives thereafter;