Adverb

1. Point by point; taking one topic or subject at a time in an order.
   • 1755: W. Massey, Corruptae Latinitatis Index, p63

     Seriatim, I know of no good Authority that this Adverb can claim, though it has got a Place in our Dictionaries, and School-Books.

   • 1829: Thomas Jefferson Randolph, Memoir, Correspondence, and Miscellanies: from the papers of Thomas Jefferson, p337

     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.

     A judiciary law was once reported by the Attorney General to Congress, requiring each judge to deliver his opinion seriatim and openly, and then to give it in writing to the clerk to be entered in the record.

   • 2004: Jon L. Ericson, Notes and Comments on Robert’s Rules, p87

     What does “consider seriatim” mean? To consider seriatim means to consider a motion part by part. (Literally, seriatim means in a series, so a motion could be considered by sentence, by paragraph, or by section.)

   • 2006: Daniel Yeager, J. L. Austin and the Law: Exculpation and the Explication of Responsibility, p42

     Children who seriatim decapitate a row of trees or pull the wings off flies hardly do it unintentionally, but they may have no reason or motive…