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crossopterygian - definition and synonyms


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90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.

  1. From our crowdsourced Open Dictionary
    an almost extinct type of fish with pairs of fins on either side of its bodySubmitted from United Kingdom on 15/04/2013

Open Dictionary


the activity of exploring abandoned buildings and other manmade structures

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