for Monday, 27 May 2019
1. in a series; one after another.
I’ve been reading all the “Doonesbury” strips from the fall of 1976 through January of 1980, seriatim.
-- Rick Perlstein, "Rick Perlstein: By the Book," New York Times, August 28, 2014
The English adverb seriatim “one after another, in a series,” comes directly from the Medieval Latin adverb seriātim, which has the same meaning. Seriātim is composed of the Latin noun seriēs “line, series” and the adverb suffix -ātim, extracted from Latin adverbs like gradātim “by steps, ascending or descending gradually,” and certātim “in rivalry, emulously.” The suffix is a useful one, forming adverbs like literātim “literally, letter for letter, literatim,” and verbātim “literally, word for word, verbatim.” Seriatim entered English in the late 15th century.