xy·li·tol 
(zīlĭ-tôl′, -tōl′, -tŏl′)
(zīlĭ-tôl′, -tōl′, -tŏl′)n.
A sweet white crystalline alcohol derived from xylose, C5H12O5, used in gum and oral health products to inhibit bacteria that cause caries and as a dietary sugar substitute.
[XYL(OSE) + (SORB)ITOL.]