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unreactive

adjective un·re·ac·tive \ ˌən-rē-ˈak-tiv \
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Definition of unreactive

: not tending to react : not reactive
  • pupils unreactive to light
  • chemically unreactive solvents

First Known Use of unreactive

1832

in the meaning defined above

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Medical Dictionary

unreactive

adjective un·re·ac·tive \ -rē-ˈak-tiv \

medical Definition of unreactive

: not reactive
  • pupils unreactive to light
  • an unreactive gas

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