/ Thesaurus / I Synonyms of in series Find synonyms for: Adjective1. serial, in series(predicate), nonparallel, asynchronous (vs. synchronous)usage: of or relating to the sequential performance of multiple operations; "serial processing"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language