An Etymological Dictionary of Astronomy and Astrophysics

In a series of numerical values, the operation performed to find a number or value which is not present but which can be derived approximately from those that are present.

Etymology (EN): Verbal noun of interpolate, from L. interpolatus, p.p. of interpolare “to make new, refurbish, alter,” from → inter- + polare, related to polire “to smoothe, polish.”

Etymology (PE): Andaryâbeš, from andar-, → inter-, + yâbeš “finding,” verbal noun of yâftan, yâbidan “to find, discover; to obtain, acquire;” Mid.Pers. ayâftan, ayâpênitan “to reach, attain;” Manichean Mid.Pers. ‘y’b “to attain;” Parthian, Sogdian (+ *pati-) pty’b “to reach, obtain;” Av. ap- “to reach, overtake,” apayeiti “achieved, reached;” Skt. âp- “to reach, gain,”
âpnoti “reaches, gains;” Gk. hapto, haptomai “to touch, cling to, adhere to;” L. apiscor “touch, reach;” PIE base *ap- “to take, reach.”