breakthrough. The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.

The American Heritage^® Dictionary of the English Language: Fourth Edition. 2000.

breakthrough

SYLLABICATION:	break·through
PRONUNCIATION:	brkthr
NOUN:	1. An act of overcoming or penetrating an obstacle or restriction. 2. A military offensive that penetrates an enemy's lines of defense. 3. A major achievement or success that permits further progress, as in technology.


The American Heritage^® Dictionary of the English Language, Fourth Edition. Copyright © 2000 by Houghton Mifflin Company. Published by the Houghton Mifflin Company. All rights reserved.