Define the following term：extension of meaning
EXTENSION OF MEANING, ALSO KNOWN AS GENERALIZATION, IS THE NAME GIVEN TO THE WIDENING OF MEANING WHICH SOME WORDS UNDERGO. IT IS A PROCESS BY WHICH A WORD WHICH ORIGINALLY HAD A SPECIALIZED MEANING HAS NOW BECOME GENERALIZED. IN OTHER WORDS, THE TERM HAS EXTENDED TO COVER A BROADER AND OFTEN LESS DEFINITE CONCEPT. 
