prefix

1. form of xantho- before a vowel

prefix (or xanth- before a vowel)

1. yellow

1. (chemistry) derivative of xanthic acid

prefix or xen-

1. Having to do with foreigners, as in xenophilia.
2. From a foreign place, as in xenolith
3. Alternative form of xen-

prefix (xyl- before a vowel)

1. wood
   
2. xyline