1. Mathematics(Abstract Noun-Neuter) A null set is a set that is negligible for the purposes of the measure in question. The term "null set" is sometimes also used to refer to the empty set. Alternatively, it may be used for any notion of negligible set.

English: empty set, null set, void set,
Assamese: শূন্য সংহতি, ৰিক্ত সংহতি

Related Idea:

a. Abstract Noun-Neuter: vacancy, বিহীনতা, শূন্যতা, ৰাহিত্য, ৰিক্ততা...