Way in which thing, e.g. computer function, works.

outside. without it being case that. in absence of.

Causing trouble. unwelcome or harmful matter.

picture or diagram made with pencil, pen. Images made of lines done with a pencil.

having acquired much knowledge through study. To get knowledge or skills by study or experience.

identification of nature of illness by examination of symptoms. Judgments by a doctor about a person's illness.

The act of using energy, food or materials; the amount used.

before or by now or time in question.

circular route or movement. Areas where car race in a circle. To complete a journey all the way round an area.

for reason that.

Brief, complete and accurate. brief statement or account of main points of something.

Not of the same kind; unlike other things.

existing at beginning. first letter of name or word. To authorize something by writing your initials.

Expression of good will, as when meeting someone. To meet with friendly words and actions; welcome.

having all necessary parts. To finish or reach the end of doing something.