- (n.) That which guides, points out, informs or directs; a pointer or a hand that directs to anything, as the hand of a watch, a movable finger on a gauge, scale or other graduated instrument. In printing, a sign used to direct particular attention to a note or paragraph; -- called also fist.
- (n.) The second digit, that next pollex, in the manus or hand; the forefinger; index finger.
- (n.) The figure or letter which shows the power or root of a quantity; the exponent.
- (v.t.) To provide with an index or table of references; to put into an index; as, to index a book or its contents.
- (n.) That which points out; that which shows, indicates, manifests or discloses.
- (n.) A prologue indicating what follows.
- (n.) A table for facilitating reference to topics, names, and the like, in a book; -- usually alphabetical in arrangement, and printed at the end of the volume.
- (n.) The ratio or formula expressing the ratio, of one dimension of a thing to another dimension; as, the vertical index of the cranium.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). index. Retrieved September 22, 2026, from http://smartdefine.org/index/definitions/2020787 |
| Chicago | Webster's. 2011. "index" http://smartdefine.org/index/definitions/2020787 (accessed September 22, 2026). |
| Harvard | Webster's 2011, index, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/index/definitions/2020787>. |
| MLA | Webster's. "index" 27 May 2011. Web. 22 September 2026. <http://smartdefine.org/index/definitions/2020787> |