স্পর্শ-কোণ: [Noun] Angle of contact.
Related Words
সমবর্তকোণ স্পর্শ করা স্পর্শ-কোণ স্পর্শকরা স্পর্শনীয় স্পর্শবর্ণ স্পর্শসুখ স্পর্ষ করা স্বর্গভোগSee Words Also In
1.Google-Translator 2.Wikipedia 3.Wiktionary.org
Appropriate Prepositions
Ask about (কাউকে খোঁজ করা): Rahim asked about Karim.
Dull at (অপ্টু/কাঁচা): He is dull at mathematics.
Good for, at (ভাল): This man is good for nothing. He is good at English.
Play at (খেলা): I do not play at cards.
Point out (চিহ্নিত করা): Point out the mistakes from the book.
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Idioms
Easy and free (অমায়িক): The boy is easy and free, so he has many friends.
In full swing (পুরোদমে): The school is in full swing after the vacation.
Let loose (বল্গাহীনভাবে ছেড়ে দেয়া): He let his horse loose in the field.
Red letter day (স্মরণীয় দিন): The 16th December is a red letter day for us.
Red tape (official formalities, অফিসের কাজ)— You would not believe the red tape involved in getting the required permits.