Enter a clue or pattern or both:
The Clue
Invention of 1824 (13 letter answer)
The Answer
ELECTROMAGNET
Tags
Notes
The answer ELECTROMAGNET is so rare that it appears less than once every 2500 puzzles.
Definition
ELECTROMAGNET as a noun:
1. a temporary magnet made by coiling wire around an iron core; when current flows in the coil the iron becomes a magnet