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.

Lack of friendliness toward another person. make distant in position or nature.

Can see, easily seen or understood.

Specific group of people from a larger group. divide into sections.

group of symptoms which consistently occur together, or condition characterized by set of associated symptoms.

(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.

intellectual and practical activity encompassing systematic study of structure and behaviour of physical and natural world.

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

able or likely to cause harm or injury.

To cause a change in something else.

To regularly pay to receive a service.

To act or speak for another person or other people.