Cākṣuṣa–Vaivasvata Manvantara Transition, Deva-Gaṇa Taxonomy, and Loka-Triad Etymology
Bhūr–Antarikṣa–Dyu
तस्माद्भव्यो ह्यसौ लोको नामतस्त्रिदिवं स्मृतम् / भूरितीयं स्मृता भूमिरन्तरिक्षं भुवः स्मृतम्
tasmādbhavyo hyasau loko nāmatastridivaṃ smṛtam / bhūritīyaṃ smṛtā bhūmirantarikṣaṃ bhuvaḥ smṛtam
Therefore that Bhavya world is remembered by name as ‘tridiva’. ‘Bhūḥ’ is recalled as the earth, and ‘bhuvaḥ’ as the mid-space, antarikṣa.