centripetal (adj.)youdaoicibaDictYouDict[centripetal 词源字典]
1709, from Modern Latin, coined 1687 by Sir Isaac Newton (who wrote in Latin), from Latin centri- alternative comb. form of centrum "center" (see center (n.)) + petere "to make for, go to; seek, strive after" (see petition (n.)). Centripetal force is Newton's vim ... centripetam.[centripetal etymology, centripetal origin, 英语词源]