Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

Comprehensive
Dictionary Suite
Help
Help
Help
 
Advanced Dictionary    
Display options
   

survival of the fittest

 
pronunciation:
sr vaI vl v th fI tihst
part of speech: noun
definition: in biology, the evolutionary principle that only the forms of plants or animals best suited to or most easily able to adapt to existing conditions will survive, while other less suited forms will become extinct. (See natural selection.)