| Answer | Crossword Clue |
|---|---|
| ANNEAL | Heat and cool, to strengthen |
| temper | to heat and cool (metal) to obtain the proper hardness and strength |
| tempers | to heat and cool (metal) to obtain the proper hardness and strength |
| temperer | to heat and cool (metal) to obtain the proper hardness and strength |
| anneal | to heat and then cool (as steel or glass) usually for softening and making less brittle |
| annealing | Heat (metal or glass) and allow it to cool slowly, in order to remove internal stresses and toughen it |
| anneal | heat and then cool (double-stranded nucleic acid) in order to separate strands and induce combination at lower temperature with complementary strands |
