Wave length : তরঙ্গদৈর্ঘ্য; মধ্যবর্তী ব্যবধান; একটি তরঙ্গের চূড়া হইতে অন্য তরঙ্গের চূড়ার দূরত্ব;
Related Words
wave length  wavelength  wavelengths  See Words Also In
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Appropriate Prepositions
Adequate for(পর্যাপ্ত): The loan given by the bank is not adequate for the farming project.
Ask for (কোনো কিছু চাওয়া): Do not ask him for any help because he doesn’t like to help anyone.
Conscious of(সচেতন): I am conscious of my deficiencies.
Depend upon (নিশ্চিত থাকা, আস্থা রাখা): Sumi depended upon his word.
Perfect for (সঠিক, মানানসই): The new book is perfect for you.
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Idioms
Back and bally (জীবিকা, ভরণ পোষণ—n) Who will provide the increasing population with the required back and bally?
Call to mind (স্মরণ করা): I cannot call to mind your cell number.
In a fix (মুশকিলে পতিত হওয়া): The man is in a fix with his new hairstyle.
Now and then (মাঝে মাঝে): He comes here now and then.
Three R's (প্রাথমিক শিক্ষা)— He has not yet learnt the three R's.