Word Explorer
Children's Dictionary
Help
Help
Help
 
Advanced Dictionary        

break·through

breakthrough

 
 
pronunciation:
breIk thru
part of speech: noun
definition 1: an act of overcoming or moving through an obstacle or restriction.
definition 2: an important discovery in a particular field that encourages an acceleration in knowledge or expertise.
The discovery of penicillin was a tremendous breakthrough in the treatment of disease.
antonyms:
setback