Ontology : তত্ত্ববিদ্যা; সত্তার বা অস্তিত্বের প্রকৃতি সম্পর্কিত অধিবিদ্যার বিশেষ একটি শাখা;
Related Words
ontological  ontologies  ontology  See Words Also In
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Appropriate Prepositions
Annoyed for(কোনো কারনে বিরক্ত হওয়া): The officer was annoyed with the clerk for being late.
Attention to(মনোযোগ): He has no attention to his studies.
Effect of (প্রভাব): The effect of corruption is very harmful for our society.
Look for (খোঁজা): I was looking for the lost phone.
Regret for (দুঃখ করা): We regretted for his failure.
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Idioms
At least (in the lowest estimate- কমপক্ষে) He is the owner of thirty lakh taka at least.
Sheet anchor (শেষ আশ্রয়; প্রধান অবলম্বন; আসল খুঁটি)— This small piece of land is his sheet anchor.
Turn over a new leaf (begin a new phase of life, নবজীবন শুরু করা) —After his failure he turned over a new leaf.
Up-to-date (আধুনিক) - Now-a-days ladies are very up to date.
Without fail (অবশ্যই) - You must attend the meeting without fail.