Plano-convex : সমোত্তল;
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plano-convex  planoconvex  See Words Also In
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Appropriate Prepositions
Affectionate to(স্নেহশীল): He is very affectionate to his baby.
Apart from(ছাড়া, ব্যতীত, দূরে): They pave apart from each other.
Authority over (কর্তৃত্ব, আধিপত্য): She has no authority over his growing daughters.
Convenient to(সুবিধাজনক): The work is convenient to your nature.
Damage to (ক্ষতি): The flood caused much damage to crops last year.
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Idioms
At a discount (অনাদৃত) Female education is no longer at a discount now.
Dead of night (মধ্যরাত্রি): The robbers broke into the house at dead of night.
In the long run (পরিণামে): You will have to suffer in the long run.
Round the clock (সমস্ত দিন): He is working round the clock.
Short cut (সংক্ষিপ্ত পথ)— He comes by this shortcut.