Term: cosmic radiation: radiation coming from outside the solar system
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: cartouche: a cartridge (usually with paper casing)
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: window: an opening that resembles a window in appearance or function
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: boring: the act of drilling a hole in the earth in the hope of producing petroleum
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: threonine: a colorless crystalline amino acid found in protein; occurs in the hydrolysates of certain proteins; an essential component of human nutrition
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: lethal agent: an agent capable of causing death
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: composition: something that is created by arranging several things to form a unified whole
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: calcium ion: ion of calcium; a factor in the clotting of blood
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: ditto mark: a mark used to indicate the word above it should be repeated
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: potential divider: resistors connected in series across a voltage source; used to obtain a desired fraction of the voltage
Broader: natural phenomenon: all phenomena that are not artificial | Unrelated: amino: the radical -NH2