noun
- Biennial Eurasian white hairy thistle having pale purple flowers; naturalized in North America.
- synonyms: cotton thistle, woolly thistle, Scotch thistle, Onopordum acanthium
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). onopordon acanthium. Retrieved September 20, 2026, from http://smartdefine.org/onopordon_acanthium/definitions/1298740 |
| Chicago | WordNet. 2010. "onopordon acanthium" http://smartdefine.org/onopordon_acanthium/definitions/1298740 (accessed September 20, 2026). |
| Harvard | WordNet 2010, onopordon acanthium, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/onopordon_acanthium/definitions/1298740>. |
| MLA | WordNet. "onopordon acanthium" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/onopordon_acanthium/definitions/1298740> |