The word "spiritualiser" is spelled with the letters s-p-i-r-i-t-u-a-l-i-s-e-r. In IPA phonetic transcription, it is pronounced as /ˈspɪrɪtʃʊəlaɪzə/. The word is a verb that means to make something more spiritual, to imbue with spiritual qualities, or to interpret in a spiritual way. The suffix "-iser" or "-izer" is often used in English to create verbs from existing nouns. Therefore, "spiritualiser" is derived from the noun "spiritual."
One who spiritualises.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.