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countable and uncountable, plural immunisations
(British spelling, immunology) Alternative spelling of immunization
(rail transport, electrical engineering) The process of immunising signalling and traction power supplies so they don't interfere with each other. quotations examples
"Secondly, we have to find more cost-effective ways of electrifying. And we've had a real breakthrough in the last couple of years in terms of bridge clearances and immunisation, meaning we've been able to take hundreds of millions of pounds off the cost of electrification.
2020 May 20, Andrew Haines talks to Stefanie Foster, “Repurpose rail for the 2020s”, in Rail, page 33