XAN 



445 



XYL 



canthelasma, n., zantlM-az'-ma 

 (Gr. xanthos, yellow ; Plasma, 

 a plate of metal hammered out), 

 a disease of the skin characterised 

 by yellow, slightly-raised patches, 

 most common around the eyelids. 



lanthic, a., zanth'-ik (Gr. xanthos, 

 yellow), tending towards a yellow 

 colour: xanthine, n., z&nihtin, 

 the yellow, insoluble, colouring 

 matter in certain plants and 

 flowers. 



Kanthophyll, n., zanthf-o-fil (Gr. 

 xanthos, yellow; phullon, a leaf), 

 the yellow colouring matter of 

 plants. 



Xanthorrhaea, n., zanth'-or-re'a 

 (Gr. xanthos, yellow ; rMo, I 

 flow), a genus of plants, Ord. 

 Liliacese, to which belong the 

 Black-boy, grass-gum trees of 

 Australia : Xanthorrhaea hastile, 

 hast>ll f '% (L. hn^tlU, the shaft of 

 a spear), the grass-tree of New S. 

 "Wales, yields a yellow gum-like 

 substance ; the leaves afford good 

 fodder for cattle, and the natives 

 eat the tender white centre of 

 the top. 



Xanthoxylaceae, n. plu., zanth- 

 &ks''il'a''S%-e (Gr. xanthos, yellow; 

 zultin, wood), the Xanthoxylon 

 family, an Order of plants, some 

 of which yield a volatile oil, 

 aromatic and pungent, some are 

 diaphoretics, others febrifugal 

 and tonic : Xanthoxylon, n. , 

 zanth-dks'il'd'n, a genus of plants, 

 from their pungency sometimes 

 called peppers : Xanthoxylon 

 fraxineum, fraks-m'-e'-um (L. 

 fraxmZus, of ash - wood from 

 frdxmus, the ash -tree), the 

 prickly ash, acts as a sialogogue : 

 A. caribsBum, kar'-ib-e'-um (of or 

 from the Caribbean Islands'), 

 W. Indian species having a bitter 

 and febrifugal bark: X. piperitum, 

 piptyr-it'-um (L. piperltus, of or 

 pert, to pepper from piper, 

 pepper), a Japanese species called 

 Japan pepper : xanthopicrine, 

 n., zanth'tip'-ik-rin (Gr. scanthos, 



yellow ; piTcros, sweet), the bitter 

 principle secreted by many 

 species of the Order. 

 xeroderma, n., zer'-o-dermf-d (Gr. 

 xeros, dry ; derma, skin), a skin 

 which is dry, hard, and rough ; 

 also termed ichthyosis, or fish- 

 skin disease. 



xerophiles, n. plu., zer'-o-filz (Gr. 

 xeros, dry ; phileo, I love), in 

 bot. , plants which require a large 

 amount of heat and but little 

 moisture : xerophilous, a. , zVr-of- 

 il-us, of or pert, to such plants, 

 xiphisternum, n., zi^'Stern'-urn 

 (Gr. xiphos, a sword ; sternon, 

 the breast), in zool., the inferior 

 or posterior segment of the 

 sternum, corresponding to the 

 xiphoid cartilage of human 

 anatomy. 



xiphoid, a., zif-oyd (Gr. xiphos, a 

 sword ; eidos, resemblance), in 

 anat. , sword - shaped ; a term 

 applied to the cartilage of the 

 sternum. 



xiphophyllous, &.,zif'd-fil''lus (Gr. 

 xiphwn, a corn flag from xiphos 9 

 a sword; phullon, a leaf), in bot. 9 

 having ensiform leaves. 

 Xiphosura, n., zif^dz-ur^a (Gr. 

 xiphos, a sword ; oura, a tail), 

 an Order of Crustacea, charac- 

 terised by their long, sword-like 

 tails, as in the King-crabs. 

 xylem, n., zil'-em (Gr. xulon, 

 wood), bast-fibre or flax, procured 

 from the inner bark of the stalk 

 of Linum usitatissimum ; woody 

 tissue. 



xylocarp, n., zil'-o-lcdrp (Gr. xulSn, 

 wood; karpos, fruit), in bot., a 

 hard and woody fruit : xylocarp- 

 ous, a., zil'-d-kdrp'-tis, having 

 fruit becoming hard and woody, 

 xylophagous, a., zil-d/'dg-iis (Gr. 

 xul6n, wood ; phago, 1 eat), eat- 

 ing or feeding on wood ; in zool. , 

 applied to certain Mollusca. 

 Xylopia, n., zil'dp'-l-a (Gr. xulon, 

 wood ; pikrtis, bitter), a genus of 

 ornamental plants, Ord. Anon- 

 acese, the wood of some species 



