Ballistics : ক্ষেপণাস্ত্র বিজ্ঞান; কোনো ক্ষেপণাস্ত্রের গতিপথের বা গতি ছন্দের বিশেষত্ব;
Related Words
ballistic  ballistic missile  ballistics  blasts  See Words Also In
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Appropriate Prepositions
Ask for (কোনো কিছু চাওয়া): Do not ask him for any help because he doesn’t like to help anyone.
Based on(প্রতিষ্ঠিত, ভিত্তিক): His information is not based on the correct information.
Hit upon (পরিকল্পনা নেয়া): Rahim hit upon a new plan.
Stare at (চাওয়া বা তাকানো): He stares at me.
Substitute for (বদলে দেওয়া): This action is substitute for that.
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Idioms
All in - (পরিশ্রান্ত): I was all in after the meeting.
Bring to book (reproach-Start- ভর্ৎসনা করা) The father brought his son to book for his failure in the exam.
In black and white – (লিখিতভাবে) – Put forward your proposal in black and white.
Pass away (মারা যাওয়া)— He passed away last night.
Red tape (official formalities, অফিসের কাজ)— You would not believe the red tape involved in getting the required permits.