- See Iso-.
- Applied to certain compounds having the same composition but different properties; as in isocyanic.
- Applied to compounds of certain isomeric series in whose structure one carbon atom, at least, is connected with three other carbon atoms; -- contrasted with neo- and normal; as in isoparaffine; isopentane.
- A prefix or combining form, indicating identity or equality; the same numerical value; as in isopod, isomorphous, isochromatic.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). Is-. Retrieved September 28, 2026, from http://smartdefine.org/is-/definitions/2023867 |
| Chicago | Webster's. 2011. "Is-" http://smartdefine.org/is-/definitions/2023867 (accessed September 28, 2026). |
| Harvard | Webster's 2011, Is-, Smart Define, viewed 28 September, 2026, <http://smartdefine.org/is-/definitions/2023867>. |
| MLA | Webster's. "Is-" 27 May 2011. Web. 28 September 2026. <http://smartdefine.org/is-/definitions/2023867> |