/ Dictionary / Index S sech: Meaning and Definition of Find definitions for: sech Pronunciation: [key] — Symbol, Math. hyperbolic secant. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. secessionist Seckel Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language