In series, one after the other, as opposed to in parallel.(adverb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "serially" in a sentence
"If what Frank writes is even close to the truth (and his evidence seems overwhelming), George Polk was an impostor diligent in serially misrepresenting his war record."
"Neither, in fact, are the programmers themselves, who have all grown up writing software to run on a single engine — serially, that is, not in parallel."
"After Keller acknowledged that the Times was "serially" clearing its reporting on the leaks with the White House, Ross noted wryly that perhaps "one shouldn't go to The New York Times" to read what's in the leaks."