Quaternion : চার বস্তুর সমষ্টি; চার প্রাণীর সমষ্টি;
Related Words
quadroon  quaternary  quaternion  quatra in  quatrain  quatrains  See Words Also In
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Appropriate Prepositions
Appointment with (সাক্ষাতের সময়): He has an appointment with the minister at 10:00 am.
Good for, at (ভাল): This man is good for nothing. He is good at English.
Shout at (চিৎকার করে ডাকা): Do not shout at your parents.
Stare at (চাওয়া বা তাকানো): He stares at me.
Wish for (প্রত্যাশা করা): Everybody wish for happiness.
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Idioms
At home (comfortable— আরাম) He feels at home in Dhaka now.
Back and forth (to and fro-এদিক ওদিক – adv.) The mad man was walking back and forth in the doctor’s chamber.
Call in question (সন্দেহ করা): No one can call his honesty in question.
Fish out of water (অস্বস্তিকর অবস্থা): When he came to the village, he felt like fish out of water.
Slip of the pen (লেখায় অসতর্কতাবশত সামান্য ভুল): The mistake is due to a slip of the pen.