seriatim /sɪəɹɪˈeɪtɪm/adjective 1adverb 1 adjective1 •Point by point; sequential. adverb1 •One after another, in order; taking one topic or subject at a time in an order; sequentially.That pen should go on, lay bare these wounds of our constitution, expose these decisions seriatim, and arouse, as it is able, the attention of the nation to these bold speculators on its patience. — 1829