poison ivy: meaning, definition, pronunciation and examples
mediumneutral, common in everyday and technical (botanical/medical) contexts.
Quick answer
What does “poison ivy” mean?
A North American climbing plant (Toxicodendron radicans) that secretes an oil causing an itchy, blistering rash on contact with human skin.
Audio
Pronunciation
Definition
Meaning and Definition
A North American climbing plant (Toxicodendron radicans) that secretes an oil causing an itchy, blistering rash on contact with human skin.
The painful skin rash itself, caused by contact with the plant; metaphorically, any hidden or insidious source of trouble or irritation.
Dialectal Variation
British vs American Usage
Differences
The plant is native to North America; the term is used in the UK but mainly in contexts referring to North American flora or travel health. British speakers might be more familiar with 'nettle rash' or similar terms for plant-caused skin irritation.
Connotations
In the US, it carries strong connotations of a common, unpleasant childhood or outdoor hazard. In the UK, it is more of an exotic, 'American' danger.
Frequency
Much more frequent in American English due to the plant's prevalence.
Grammar
How to Use “poison ivy” in a Sentence
[Subject] got/contracted poison ivy [while hiking].Contact with poison ivy causes [a rash].Be careful not to touch poison ivy.Vocabulary
Collocations
Examples
Examples of “poison ivy” in a Sentence
verb
American English
- He was **poison-ivied** after clearing the backyard. (informal, rare)
adjective
American English
- They set up camp in a **poison-ivy** patch by mistake. (attributive use of noun)
Usage
Meaning in Context
Business
Rare. Might appear in contexts of outdoor work safety or landscaping liability.
Academic
Common in botany, ecology, dermatology, and environmental science texts.
Everyday
Very common in North America when discussing outdoor activities, gardening, and health.
Technical
Used in medical (dermatology) and botanical classifications and descriptions.
Vocabulary
Synonyms of “poison ivy”
Strong
Neutral
Weak
Vocabulary
Antonyms of “poison ivy”
Watch out
Common Mistakes When Using “poison ivy”
- Misspelling as 'poisen ivy' or 'poision ivy'.
- Using it as a countable noun (e.g., 'a poison ivy' – it's generally non-count when referring to the rash or the plant species mass).
- Confusing it with 'poison oak' or 'poison sumac', which are related but different plants.
FAQ
Frequently Asked Questions
No, the rash itself is not contagious. It is caused by direct contact with the plant's urushiol oil, which can be transferred via contaminated objects (like clothing or pet fur) but not from the blisters of an existing rash.
The rash is not contagious from person to person. However, if the plant's oil is still on your skin, clothes, or tools, it can spread to other people or body parts until it is washed off.
Wash the affected area thoroughly with soap and cool water as soon as possible (within 10-30 minutes is best) to remove the oil. Wash any clothing or tools that may have contacted the plant.
No, they are three different plant species in the same genus (Toxicodendron). They all contain urushiol and cause similar rashes, but they have different leaf shapes and grow in different regions of North America.
A North American climbing plant (Toxicodendron radicans) that secretes an oil causing an itchy, blistering rash on contact with human skin.
Poison ivy is usually neutral, common in everyday and technical (botanical/medical) contexts. in register.
Poison ivy: in British English it is pronounced /ˈpɔɪz(ə)n ˌaɪvi/, and in American English it is pronounced /ˈpɔɪz(ə)n ˌaɪvi/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “As welcome as poison ivy (meaning: very unwelcome).”
Learning
Memory Aids
Mnemonic
Remember: 'Leaves of three, let it be' is the common rhyme to identify poison ivy, which usually has three leaflets.
Conceptual Metaphor
A SOURCE OF CONTACT IS A CONTAGIOUS PROBLEM / A HIDDEN DANGER IS A TOXIC SUBSTANCE.
Practice
Quiz
What is the primary cause of the skin reaction from poison ivy?