What is meant by the term "vocabulary explosion"?

The term "vocabulary explosion" refers to a rapid growth of vocabulary typically observed in toddlers, usually occurring around the ages of 18 to 24 months. During this phase, children experience a significant increase in the number of words they can understand and use. This phenomenon is crucial in child language acquisition as it marks a transition in a child's ability to communicate effectively, moving from a limited set of words to a richer vocabulary that enhances their expressive and receptive language skills.

This developmental milestone allows children to express a wider range of ideas, emotions, and interactions with their environment, paving the way for more complex language development in the future. This rapid increase in vocabulary is often accompanied by a greater interest in language, social interaction, and sometimes a noticeable change in behavior as children engage more with their caregivers and peers through words.