fused

adjective4

1. •
   Joined together by fusing
2. •
   Having at least one bond between two atoms that is part of two or more separate rings
3. •
   Furnished with a fuse
4. •
   Melted

   • To-day, sodium is made by thousands of tons, and by a process which in principle is identical with that by which it was first made by Davy, i.e., by the electrolysis of fused caustic soda. — 1908