Definition

Noun: A specialized, multicellular plant hair (trichome) that acts as a defense mechanism. When touched, the brittle tip of the hair breaks off, and the hair injects an irritating chemical fluid (often containing histamine and other compounds) into the skin, causing a painful, stinging sensation.

Usage

This term is used specifically in botany and biology to describe a particular type of defensive plant structure. It is most commonly associated with plants in the genus Urtica (nettles).

Examples

• Noun:
  • The stinging hair on the nettle leaf is a formidable deterrent to herbivores.
  • Botanists study the structure and chemistry of the stinging hair to understand plant defense mechanisms.
  • Brushing against the plant released the toxins from its numerous stinging hairs.

Advanced Usage

• "to possess stinging hairs": to have this specific defensive feature.
  • Several species in the Loasaceae family also possess stinging hairs.
• "the mechanism of the stinging hair": referring to how the structure operates.
  • The lecture detailed the precise mechanism of the stinging hair.

Variants and Related Words

• Sting (verb/noun): The act or sensation caused by a stinging hair or other agent.
  • The nettle's sting is caused by its hairs.
• Trichome (noun): A general term for a hair or hair-like outgrowth from the epidermis of a plant. A stinging hair is a specific type of trichome.
  • Plant trichomes can be glandular, like stinging hairs, or non-glandular.

Synonyms

• Nettle hair (context-specific synonym)
• Urticating hair (a more technical synonym, also used for similar structures in some animals like caterpillars)

Related Phrases

• Stinging nettle (): The most common plant known for having stinging hairs.
  • The stinging nettle is covered in fine stinging hairs.

Noun

1. a multicellular hair in plants like the stinging nettle that expels an irritating fluid