hydrargyrum
‘mercury, quicksilver’
Lexical development traced from the Tamil root:
E. hydrargyre < Lat. hydrargyrus < Gk. hydrargyros ‘quicksilver’ < hydr- < hydor ‘water’ + argyros ‘silver’ < haid < wed- < Tamil utakam
hydrargyrum
English words derived from Tamil utakam connoting 'water'