1. (a.) At the utmost point, edge, or border; outermost; utmost; farthest; most remote; at the widest limit.

2. (a.) Last; final; conclusive; -- said of time; as, the extreme hour of life.

3. (n.) The best of worst; most urgent; greatest; highest; immoderate; excessive; most violent; as, an extreme case; extreme folly.

4. (a.) Radical; ultra; as, extreme opinions.

5. (a.) Extended or contracted as much as possible; -- said of intervals; as, an extreme sharp second; an extreme flat forth.

6. (n.) The utmost point or verge; that part which terminates a body; extremity.

7. (n.) Utmost limit or degree that is supposable or tolerable; hence, furthest degree; any undue departure from the mean; -- often in the plural: things at an extreme distance from each other, the most widely different states, etc.; as, extremes of heat and cold, of virtue and vice; extremes meet.

8. (n.) An extreme state or condition; hence, calamity, danger, distress, etc.

9. (n.) Either of the extreme terms of a syllogism, the middle term being interposed between them.

10. (n.) The first or the last term of a proportion or series.