What does "memorialisation" mean?

Non-Oxford British English standard spelling of memorialization.

What is a synonym for "memorialisation"?

Common synonyms include: commemoration, memorialization.

noun

noun ·Rare ·Advanced level

Noun

1
Non-Oxford British English standard spelling of memorialization. UK, alt-of, countable, nonstandard, uncountable
"In many ways, his is the story of the second world war in the Pacific – a conflict overshadowed by memorialisation of events in Europe."
2
a ceremony to honor the memory of someone or something wordnet

"In many ways, his is the story of the second world war in the Pacific – a conflict overshadowed by memorialisation of events in Europe."

From memorial + -isation.