Arishtanemi ( अरिष्टनेमि )
Arishtanemi ( अरिष्टनेमि ) – अरिष्टस्य नेमि: – means one who is center of completeness
अरिष्ट means complete; imperishable, undecaying
नेमि: means center , circumference
Similar words are used for Lord Vishnu in Vishnu Sahasranamam
नक्षत्रनेमिः – The center of the stars
गभस्तिनेमिः – The center of the light
Rishi Kashyap – Arishtanemi
Arishtanemi ( अरिष्टनेमि ) is one of the name of Rishi Kashyap, same is mentioned in Ramayana, Balakanda Chapter 38 verse 4.
अरिष्टनेमेर्दुहिता सुपर्णभगिनी तु सा।
द्वितीया सगरस्यासीत्पत्नी सुमतिसंज्ञिता । 1.38.4 !!
The daughter of Arishtanemi and sister of Garuda (सुपर्ण) named Sumati (सुमति) was the second wife of Sagara (सगर).
Rishi Kashyap was the father-in-law of Sagara.