immunise

From French immuniser, equivalent to immune +‎ -ise.

immunise (third-person singular simple present immunises, present participle immunising, simple past and past participle immunised)

1. (British spelling) Alternative spelling of immunize.
   • 2020 April 8, David Clough, “How the West Coast wiring war was won”, in Rail, page 63:

     Planning the resignalling element was problematic because immunising the new colour-light signals for an electric railway was costly and unnecessary if electrification was not approved.

immunise

1. inflection of immuniser:
   1. first/third-person singular present indicative/subjunctive
   2. second-person singular imperative