The meaning of the phrase 'Null and void' is -

The meaning of the phrase 'Null and void' is - having no validity. 

• Null and void
English Meaning: having no force, binding power, or validity.
Bangla Meaning: কোনো কার্যকারিতা নেই / বাতিল

• On a par with
English Meaning: equal in importance or quality to.
Bangla Meaning: সমকক্ষ

• On and on
English Meaning: continually.
Bangla Meaning: না থেমে; ক্রমাগত

• Moot point
English Meaning: a subject that people cannot agree about.
Bangla Meaning: অমীমাংসিত বিষয়

Source: Website Lecture.