Gemmology : মণিরত্নবিদ্যা;
Related Words
gemmologist  gemmology  genealogy  See Words Also In
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Appropriate Prepositions
Bound for(প্রস্তুত থাকা): Although we can see that it is bound for failure, it is fascinating to follow its journey.
Call on(কারও সাথে দেখা করা): I called on him in his office.
Dwell in (বাস করা): He dwells in a tall apartment.
Hostile to (বিরোধী বা বিরূপ ভাবাপন্ন): Nobody is hostile to you.
Repent on (নির্ভরশীল): He is repent on his parents.
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Idioms
Easy and free (অমায়িক): The boy is easy and free, so he has many friends.
Hard nut to crack (কঠিন সমস্যা): The problem of adult education is really hard nut to crack.
Lame excuse (বাজে ওজর): The lame excuse will not do.
Round the clock (সমস্ত দিন): He is working round the clock.
Square meal (পেট ভরা আহার): He is too poor to have a square meal everyday.