Gemmologist : মনিরত্নবিদ;
Related Words
gemmologist  genealogist  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.
Argue against (বিপক্ষে বলা): She argued against the bill.
Avail (oneself) of(সুযোগের স্বব্যবহার করা): I shall avail myself of the first trip to London tomorrow.
Change into (পরিবর্তিত হওয়া): At what point does boiling water change into vapor.
Deaf to, of, in (না শোনা, বধির হওয়া): The boy is deaf to his father’s advice. This man is deaf of/in one ear.
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Idioms
Brown study (দিবাস্বপ্ন): The girl is absorbed in a brown study.
Crying need (জরুরী): Mass education is a crying need for India.
Hush money (ঘুষ): He offered a hush money to disclose the file.
Tooth and nail (তীব্রভাবে): He fought tooth and nail for the sake of country.
Well up (সুপন্ডিত)- Dr. Shahidullah was well-up in Bengali language.