Definition, Meaning & Synonyms

contactant

Noun
/kənˈtæktənt/
Definition
A substance that can cause a reaction upon contact, typically used in a scientific or medical context.
Examples
  • The contactant in the lotion caused a rash on my skin.
  • During the experiment, the researchers identified the contactant that triggered the allergic reaction.
  • Be cautious of potential contactants when handling chemicals in the lab.
Meaning
In general usage, ‘contactant’ refers to a substance that can interact with bodily tissues, often leading to an allergic or irritant reaction.
Synonyms
  • irritant
  • allergen
  • agent