/ Dictionary / Index S soft solder: Meaning and Definition of Find definitions for: soft' sol'der Pronunciation: [key] a solder fusible at temperatures below 700°F (370°C), generally an alloy of lead and tin. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. soft-soaper soft-spoken Related Content Daily Word Quiz: verdant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language