coagulate
‘to change into a thickened mass, curdle’
Lexical development traced from the Tamil root:
Lat. coagulates < coagulare ‘to cause to curdle’ < cogere ‘to curdle; to compel; to collect’ < com ‘together’ + agere ‘to set in motion, drive, drive forward; to do, perform’ < ag < ag- < Tamil ukai