The word that provides context for the word dissipates is “…fewer than 450 speakers…” (paragraph 12).
This word means to disappear progressively. For example, people dissipated due to the rain.
The word that acts as a context clue for the word "dissipate" is "fewer than 450 speakers" because this word refers to a language slowly disappearing or dissipating.
Note: This question is incomplete because the text is not provided; due to this, I answered based on general knowledge.
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