【正确答案】：
AFFIXATION IS GENERALLY DEFINED AS THE FORMATION OF WORDS BY ADDING WORD-FORMING OR DERIVATIONAL AFFIXES TO STEMS. THIS PROCESS IS ALSO KNOWN AS DERIVATION, FOR NEW WORDS CREATED IN THIS WAY ARE DERIVED FROM OLD FORMS. 
【题目解析】：本题考查词缀法的含义。词缀法可定义为通过给词干加构词词缀或派生词缀构成新词的一种构词方法。用这种方法构词叫派生构词，因为这类新词是从旧词派生而来的。