Back to the Beginning, Known as __ One
This page is the CodyCross answer for the clue below from Physics, Group 1896, Puzzle 4 (Infrared Camera).
Question is: Back to the Beginning, Known as __ One
and the answer is: SQUARE
Word Meaning:
SQUARE — (geometry) A polygon with four straight sides of equal length and four right angles; an equilateral rectangle; a regular quadrilateral.
Definitions from Wiktionary.