কঠিনতাকঠিনো কঠিনত্ব (Assamese) [ Roman: ko.thi.no.two]Contributed by: Anjali Sonowal on 2011-05-22 1. (Abstract Noun-Neuter) the characteristics of being hard English: hardness, Assamese: কঠিনতা, কঠিনত্ব, কাঠিন্য, Mising: tornam