प्लक्षद्वीपवर्णनम्
Description of Plakṣa-dvīpa
उदकस्यायनं यस्मात्तस्मादुदधिरुच्यते / अपर्वाणस्तु गिरयः पर्वभिः पर्वताः स्मृताः
udakasyāyanaṃ yasmāttasmādudadhirucyate / aparvāṇastu girayaḥ parvabhiḥ parvatāḥ smṛtāḥ
Because it is the waters’ resting-place and course, it is called udadhi (ocean); mountains without joints are giri, while those with joints are remembered as parvata.