In early childhood, vocabulary development proceeds at a rapid pace. One of the factors leading to its rapid acquisition is the process of fast mapping. Fast mapping is best defined as .

process by which a child absorbs the meaning of a new word after hearing it once or twice in conversation

Explanation:

Fast mapping can be best defined as the process by which a child absorbs the meaning of a new word after hearing it once or twice in conversation. This occurs often at really young ages, which is one of the reasons that children are able to learn at a rapid pace, as well as the fact that children's prefrontal cortex of the brain, where working memory is stored, is still not developed thus allowing them to store a large quantity of information.

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