In astronomy and cosmology, dark matter is a type of matter hypothesized to account for a large part of the total mass in the universe. Dark matter cannot be seen ...
dark (därk) adj. dark·er, dark·est. 1. a. Lacking or having very little light: a dark corner. b. Lacking brightness: a dark day. 2. Reflecting only a small ...
adjective 1. having very little or no light: a dark room. 2. radiating, admitting, or reflecting little light: a dark color. 3. approaching black in hue: a dark brown ...
Darkness, in contrast with brightness, is a relative absence of visible light. It is the appearance of black in a color space. When light is not present, rod and cone ...
Having an absolute or (more often) relative lack of light. The room was too dark for reading. · (of colour) Dull or deeper in hue; not bright or light. My ...
