Enter a clue or pattern or both:
The Clue
Wavelength unit (8 letter answer)
The Answer
ANGSTROM
Tags
Notes
The answer ANGSTROM is so rare that it appears less than once every 2500 puzzles.
Definition
ANGSTROM as a noun:
1. (angstrom, angstrom unit, A) = a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation