Rarefaction : তনুভবন; বিরলীকরণ; লঘুভবন; সূক্ষ্মভবন;
Related Words
rarefaction  rarefactions  refection  revivification  revocation  revocations  See Words Also In
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Appropriate Prepositions
Congratulate on(অভিনন্দন জানানো): They congratulated me on my brilliant success.
Die by (দূর্ঘটনা বা অপঘাতে মরা/কোন কিছু দ্বারা মারা যাওয়া): He died by a road accident.
Look at (তাকানো): Students look at the blackboard.
Point out (চিহ্নিত করা): Point out the mistakes from the book.
Popte in, to (মার্জিত): We must be popte in our dealings. One should be popte to
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Idioms
Crying need (জরুরী): Mass education is a crying need for India.
Irony of fate (ভাগ্যের পরিহাস): He could not succeed by irony of fate.
Now and then (মাঝে মাঝে): He comes here now and then.
On the wane (হ্রাসমান): His fame is on the wane now.
Weal and woe (সুখ-দুঃখ): Human life is full of weal and woe.