1. A sudden, dramatic, and important discovery or development
The company achieved several breakthroughs in renewable energy technology.
A empresa alcançou vários avanços na tecnologia de energia renovável.
2. A successful or unexpected solution to a problem
Scientists had a breakthrough in understanding the disease's cause.
Os cientistas tiveram um avanço na compreensão da causa da doença.
3. A penetration or overcoming of a barrier or obstruction
The military forces made a breakthrough in the enemy's defensive lines.
As forças militares fizeram um avanço nas linhas defensivas do inimigo.