Answer: prill

AnswerCrossword Clue
PRILLDry residue from molten liquid
PRILLRich copper ore.
PRILLRich copper ore
PRILLBeadlike pellet
PRILLPelletize
prillto convert (as a molten solid) into spherical pellets usually by forming into drops in a spray and allowing the drops to solidify
prillto convert into pellets