কঠিনতমকঠিনত্ব কঠিনতা (Assamese) [ Roman: ko.thi.no.ta]Contributed by: Prabin Kakati (প্ৰবিন কাকতি) on 2008-10-27 1. (Abstract Noun-Neuter) the characteristics of being hard English: hardness, Assamese: কঠিনতা, কঠিনত্ব, কাঠিন্য, Mising: tornam