lyso-Related entries & more
word-forming element indicating "loosening, dissolving, freeing," before vowels lys-, from Greek lysis "a loosening," from lyein "to loose, loosen," from PIE root *leu- "to loosen, divide, cut apart."
xylo-Related entries & more
before vowels xyl-, word forming element meaning "wood," from Greek xylon "wood cut and ready for use, firewood, timber; piece of wood; stocks, a plank, beam, or bench," in New Testament, "the Cross," a word of uncertain origin. It seems to correspond with Lithuanian šulas "post, pole, stave," Russian šulo "garden-pole," Serbo-Croatian šulj "block," Old High German sul "style, pole," Gothic sauls "pillar," but the exact relationship is unclear, and Beekes asks, "Was the word taken from a non-IE substrate language?"