cosmic background radiation see microwave background under microwave

cosmic constant same as cosmological constant (see under cosmology).

cosmic dust noun

Fine particles occurring in interstellar space

cosmic radiation noun

Radiation consisting of cosmic rays

cosmic rays plural noun

Highly penetrating rays from interstellar space, consisting of protons, electrons, positrons, etc

cosmic string noun (astronomy)

Any of the massive hypothetical filaments of matter predicted to be an important component of the very early universe (see also string theory under string)

microwave /mīˈkrō-wāv/

1. In radio communication, a wave having a very short wavelength
2. Now usu a wave in the radiation spectrum between normal radio waves and infrared
3. A microwave oven

1. Of, relating to or denoting microwaves
2. Relating to or appropriate for a microwave oven

To cook or defrost in a microwave oven

To undergo microwaving

microwavˈable or microwaveˈable adjective

Suitable for cooking, defrosting, etc in a microwave oven

microwave background noun (astronomy)

A background of microwave radiation, discovered in 1963, thought to be a relic of the Big Bang (also cosmic background radiation)

microwave oven noun

An oven in which food is cooked or defrosted by the heat produced by microwaves passing through it