mathematical determination. An educated guess about something.

of or concerning history.

thing constituting piece of evidence about past. Round plastic discs on which music has been stored. To write down or say what happened.

set of related web pages located under single domain name. Collections of webpages in one location.

poignant. (Of ghosts, etc.) to stay in a place after death.

Plan made in secret to do something illegal.

generally believed or recognized to be valid or correct. To agree to receive or take something offered.

set down in writing or some other permanent form for later reference. To write down or say what happened.

Best or most advantageous thing for someone. excite curiosity or attention of.

expert in or student of mathematics.

From one end or side of something to the other. From the beginning of something until the end. Over, in, across an entire thing or place.

Worldwide computer network system.

Concerning a person's private life or feelings. advertisement in personal column of newspaper.

action of showing something, or fact of being shown. To lead someone somewhere; point them to something.

difficult to find or achieve. Difficult to understand or define.