Past tense and past participle of advertize; announced, promoted, or made publicly known using the archaic z spelling.
From advertize with the regular past tense marker -ed. This form preserves the historical z spelling even in modern usage when encountered in older texts or specialized contexts.
If you encounter 'advertized' in an old document, you're literally looking at the spelling of English before standardization—it's like finding a fossil record of how our language's spelling rules weren't always fixed.
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