Deprecated: Function ereg_replace() is deprecated in /site/html/applets/schoolword.php3 on line 159 What does it mean?

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From our dictionary:

co•gent

Pronunciation: (kO'junt), [key]
adj.
1. convincing or believable by virtue of forcible, clear, or incisive presentation; telling.
2. to the point; relevant; pertinent.

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