উপত্যকা (Assamese) [ Roman: u.po.tyo.ka]
    Contributed by: Ranjita Pegu on 2007-02-21
    1. Geology(Abstract Noun) a low plain bounded by mountains দুই পৰ্ব্বতৰ মাজৰ সমান ঠাই
    Contributed by: Probodh Borah (প্ৰবোধ বৰা) on 2010-12-19
    2. (Abstract Noun-Neuter) The entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet নদীৰ দুয়ো পাৰৰ যি ভূ-ভাগৰ পৰা পানী বৈ আহি নদীত পৰে
    উপত্যকা (Bangla)
    3. Geology(Abstract Noun) a low plain bounded by mountains দুই পৰ্ব্বতৰ মাজৰ সমান ঠাই