noun
- The 8th letter of the Greek alphabet. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). theta. Retrieved September 20, 2026, from http://smartdefine.org/theta/definitions/1217754 |
| Chicago | WordNet. 2010. "theta" http://smartdefine.org/theta/definitions/1217754 (accessed September 20, 2026). |
| Harvard | WordNet 2010, theta, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/theta/definitions/1217754>. |
| MLA | WordNet. "theta" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/theta/definitions/1217754> |