Use "?" for one missing letter: pu?zle. Use "*" for any number of letters: p*zle. Or combine: cros?w*d
Select number of letters in the word, enter letters you have, and find words!
Close-up of a trichromatic analog television screen, which creates most visible colors through combinations and different levels of the three primary colors: green, blue and red. Trichromatic color vision is the ability of humans and some other. — “Trichromacy - Wikipedia, the free encyclopedia”, en.wikipedia.org
Two complementary theories of color vision are the trichromatic theory and the opponent process theory. The evolution of trichromatic color vision in primates occurred as the ancestors of. — “Color vision - Wikipedia, the free encyclopedia”, en.wikipedia.org
The Young–Helmholtz theory (proposed in the 19th century by Thomas Young and Hermann von Helmholtz) is a theory of trichromatic color vision – the manner in which the photoreceptor cells in the eyes of humans and other primates work to enable color vision. — “Young–Helmholtz theory - Wikipedia, the free encyclopedia”, en.wikipedia.org