চিৰস্থায়িতা (Assamese) [ Roman: si.ro.stha.yi.ta]
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    Contributed by: Probodh Borah (প্ৰবোধ বৰা) on 2011-02-18
    Ref: হেমকোষ (পুৰণি)
    1. (Abstract Noun) The characteristics unchanging in nature, value or extent with respect to any parameter like time, position, temperature, pressure, weather etc.