/ Dictionary / Index S seriplane: Meaning and Definition of Find definitions for: ser•i•plane Pronunciation: (ser'u-plān"), [key] — n. a test for evaluating the quality of raw silk by inspecting it under controlled conditions for variations in the diameter of the yarn and for imperfections and content. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. serious-minded serjeant Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language