XYLAN
Xy"lan, n. (Chem.)
Defn: A gummy substance of the pentosan class, present in woody tissue, and yielding xylose on hydrolysis; wood gum.
XYLANTHRAX
Xy*lan"thrax, n. Etym: [Gr. xy`lon wood +
Defn: Wood coal, or charcoal; — so called in distinction from mineral coal.
XYLATE
Xy"late, n. (Chem.)
Defn: A salt of xylic acid.
XYLEM
Xy"lem, n. Etym: [Gr. xy`lon wood.] (Bot.)
Defn: That portion of a fibrovascular bundle which has developed, or will develop, into wood cells; — distinguished from phloëm.
XYLENE
Xy"lene, n. Etym: [Gr. xy`lon wood.] (Chem.)
Defn: Any of a group of three metameric hydrocarbons of the aromatic series, found in coal and wood tar, and so named because found in crude wood spirit. They are colorless, oily, inflammable liquids, C6H4.(CH3)2, being dimethyl benzenes, and are called respectively orthoxylene, metaxylene, and paraxylene. Called also xylol.