In the manner or style of a chronogram; by encoding dates through letter numerals within text.
From chronogrammatical plus -ly, creating the adverbial form. This rare word appears in academic writing analyzing Renaissance texts and artistic practices that employed hidden temporal codes.
Finding this adverb in actual scholarly writing feels like discovering a chronogram itself—it's so specialized that using it proves you're deeply versed in Renaissance literature and the hidden games writers played with language.
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