定义是指该文章的作者为了更好地表达思想，在文章中对于一些非常重要的概念或者是人们难懂的术语或词汇等所作的解释。这些解释提供的信息是具有明确的针对性，考生们可以利用它们猜测词义，这个方法相对来说考生能够容易掌握。

        虽然有时候进一步阐述不如定义那样严谨和详细，但是其提供的信息足以使考生们猜出生词的词义。复述的部分可以是适当的词或者短语或者句子。例如这一句话Experts inkinesics此外划线生词,in their study of body motion as related to speech ,hope to discover发现new methods of communications交流”。

　　短语与前面生词kinesics其实是同位关系，因此我们可以相应的猜出kinesics指“肢体语言学”。在这种复述当中,构成同位关系的两部分之间多用逗号连接，有时也使用破折号，冒号，分号，引号，和括号等。另外同位语前还常有or,similarly, that is to say, in other words, namely, or other, 等副词或短语出现。

　　另外一种会以定语从句的形式出现如从句Obesity, which is a medical disorder that affectsapproximately 20-30% of the population of the United States of America. It is anexcessive accumulation of body fat that results from the storage of excess foodenergy calories in the body's fat cells. 根据生词obesity后面的非限制性定语从句which is amedical disorder that affects approximately 20-30% of the population of theUnited States of America. It is an excessive accumulation of body fat thatresults from the storage of excess food energy calories in the body's fat cells.我们可以推断出obesity的含义，即“过度肥胖”。

        恰当的举例能够提供猜测生词的重要线索，例如The consequences of epochal events such as wars andgreat scientific discoveries are not confined to a small geographical area asthey were in the past. 句中“战争”和“重大科学发现”是生词的实例，通过它们我们可以猜出epochal的 大致词义“重要的”。