বস্তুতত্ত্ব : [বিশেষ্য পদ] বস্তু-সম্বন্ধীয় বিদ্যা।
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বস্তুতত্ত্ব  বস্তুতন্ত্র  See Words Also In
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Appropriate Prepositions
Alarm at, by, for(আশংকা করা/শঙ্কিত হওয়া): I was not alarmed at/by the news, but I was alarmed for their safety.
Grasp at (আঁকড়িয়ে ধরা): He grasped me at my hand.
Hatred for (ঘৃণা): I have no hatred for anyone.
Play on (বাজানো): They play on the piano.
Stare at (চাওয়া বা তাকানো): He stares at me.
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Idioms
Bare word (শুধু মুখের কথা, স্বাক্ষী প্রমানহীন কথা-n) He believed your bare word and now he has been played false with.
Fair and square (সৎ): The learned persons should be fair and square.
Pack of lies (ডাঁহা মিথ্যা)—He told pack of lies to prove himself innocent.
Salt of the earth (গুরুত্বপূর্ণ ব্যক্তিবর্গ) —The salt of the earth is remembered always.
Short temper (রগচটা)— He is a man of short temper.