To establish the facts about; discover.

To talk about seriously or in great detail.

to great extent.

Study of past events as an academic subject.

To make available; to supply for use.

flat slab used for inscription. Small hand-held computer with a touch screen.

wide.

Costing a lot of money.

building or room containing books etc..

The way in which the parts of a system or object are arranged or organized, or a system arranged in this way. To plan, organize, or arrange the parts of something.

action of collecting.

piece of mechanical or electronic equipment. To be left to do what you want.

needing much effort or skill to accomplish, deal with, or understand.

To understand.

of very distant past. old man.