Abbreviation of Latin id est, that is.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). i. E.. Retrieved September 20, 2026, from http://smartdefine.org/i._e./definitions/2018555 |
| Chicago | Webster's. 2011. "i. E." http://smartdefine.org/i._e./definitions/2018555 (accessed September 20, 2026). |
| Harvard | Webster's 2011, i. E., Smart Define, viewed 20 September, 2026, <http://smartdefine.org/i._e./definitions/2018555>. |
| MLA | Webster's. "i. E." 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/i._e./definitions/2018555> |