Biospherian rhymes with:
algerian, assyrian, berberian, criterion, derderian, hanoverian, hyperion, iberian, illyrian, liberian, nigerian, presbyterian, quirion, shakespearean, siberian, syrian, thraco-illyrian, valerian, zairian
algerian, assyrian, berberian, criterion, derderian, hanoverian, hyperion, iberian, illyrian, liberian, nigerian, presbyterian, quirion, shakespearean, siberian, syrian, thraco-illyrian, valerian, zairian