Plano-convex : সমোত্তল;
Related Words
plano-convex  planoconvex  See Words Also In
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Appropriate Prepositions
Antipathy to/towards (ঘৃনা): I have a strong antipathy to smoking.
Ascend from (উপরে ওঠা): Rahim watched the mist ascending from the valley.
Assent to(সম্মতি দেওয়া): The President has assented to the bill.
Concern with (জড়িত থাকা): Asif is not concerned with this conspiracy.
Convert to(দীক্ষিত): Tom is converted to another religion.
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Idioms
Hush money (ঘুষ): He offered a hush money to disclose the file.
Run high (বেড়ে যাওয়া) —The price of everything has run high.
Slip of the tongue (বলায় সামান্য ভুল): This is a slip of the tongue; don’t pay much stress on it.
To the brim (কানায় কানায়) - The river was full to the brim.
With might and main (যথা শক্তি দিয়ে) —He tried with might and main to help me.