fixed or movable upright partition used to divide room, give shelter from draughts, heat, or light. Flat surfaces on computers or TVs showing images. conceal, protect, or shelter person or thing with screen.

Amount of space between two places or things. make distant in position or nature.

able to be seen.

Part of a book, newspaper, etc.. divide into sections.

A group of signs and symptoms of a disease.

(of biological processes) recurring naturally on twenty-four-hour cycle, even in absence of light fluctuations. Concerning biological processes occurring at -hour intervals.

every person.

think carefully about.

Study of the physical world, based on facts.

distance between successive crests of wave. The size of a wave.

Involving the chance of hurt or damage; risky.

To cause a change in something else.

arrange to receive something regularly by paying in advance.

To depict art objects, figures, scenes; to portray.