/ Dictionary / Index S signal corps: Meaning and Definition of Find definitions for: sig'nal corps" Pronunciation: [key] a branch of the army responsible for military communications, meteorological studies, and related work. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. signal box signalize Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language