IPA: /ˈɜːrtɪkənt/
KK: /ˈɜːrtɪkənt/
Causing a sensation of itching or stinging on the skin.
The urticant substance in the plant caused a rash on my arm.
A substance that causes a feeling of itching or stinging on the skin.
The urticant in the plant made my skin itch after I touched it.
Urticant is derived from "urtica" (meaning nettle) and the suffix "-ant" (meaning causing or performing). The word refers to something that causes a stinging or nettle-like sensation.
Think of 'urtica' which means nettle, and remember that 'urticant' refers to something that causes a stinging sensation like a nettle.