/ Dictionary / Index S sun spider: Meaning and Definition of Find definitions for: sun' spi"der Pronunciation: [key] any predatory, scorpionlike arachnid of the order Solifugae (or Solpugida), having enormously developed mouth pincers and a long body covered with tactile hairs, inhabiting deserts and plains regions in all warm parts of the world except Australia. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sun sign sunspot Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language