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cassegrainian telescope

n.
1.a reflecting telescope that has a paraboloidal primary mirror and a hyperboloidal secondary mirror

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Word of the Day

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  • cassava starch
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  • cassava
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  • cassandra
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  • cass gilbert
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  • casquetel
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  • casquet
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  • casque
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  • caspian sea
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  • caspian
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  • casserole
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  • cassette
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  • cassette deck
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  • cassette player
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  • cassette recorder
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  • cassette tape
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  • cassia
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  • cassia acutifolia
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  • cassia alata
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  • cassia augustifolia
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  • pipe vine
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  • zoophobia
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  • fernless
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  • atf
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  • memorialization
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  • genus isatis
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  • honestly
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    Idiom of the Day

    will not hear of (something)
    will not allow or consider something
    My aunt said that she will not hear of us staying at a hotel when we come to visit her.



    1.
    Choose an idiom to replace the expression in the brackets:
    After we had a good meal (in our stomach) we began to work.

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