Definition of non-irritant in US English:

non-irritant

adjective

Pharmacology
  • Of a substance: not causing irritation of the skin or other tissue.

noun

Pharmacology
  • A non-irritant substance.

Origin

Mid 19th century; earliest use found in Proceedings of the Royal Society of London. From non- + irritant.

Pronunciation

non-irritant

/nɒnˈɪrɪt(ə)nt/