Breakthrough
WordNet
noun
(1) Making an important discovery
(2) A penetration of a barrier such as an enemy's defense
(3) A productive insight
WiktionaryText
Adjective
breakthrough
- characterized by major progress or overcoming some obstacle
- a breakthrough technology
Noun
breakthrough
- An advance through and past enemy lines (or vice versa).
- Any major progress; such as a great innovation or discovery that overcomes a significant obstacle.
- Albert Einstein is credited with making some of the greatest breakthroughs in modern physics.