western poison ivy

noun

Toxicodendron rydbergii, an ivy-like species of Toxicodendron common in the western United States, well-known for its ability to causes an itching rash and blistering for most people, through urushiol, an oil that is a skin irritant.

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Meanings

nounwestern poison ivy (uncountable)
  1. uncountableToxicodendron rydbergii, an ivy-like species of Toxicodendron common in the western United States, well-known for its ability to causes an itching rash and blistering for most people, through urushiol, an oil that is a skin irritant.
Cite this entry
APA

western poison ivy. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/western%20poison%20ivy

MLA

“western poison ivy.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/western%20poison%20ivy. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “western poison ivy,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/western%20poison%20ivy.

Source: western poison ivy on Wiktionary, CC BY-SA 4.0.