Webster's Dictionary 1913

01

X

X (ĕks). X, the twenty-fourth letter of the English alphabet, has three sounds; a compound nonvocal sound (that of ks), as in wax; a compound vocal sound (that of gz), as in exa...

02

X rays

{ X rays, orX″–rays′ (?) }, n. pl. The Röntgen rays; — so called by their discoverer because of their enigmatical character.

03

X-ray tube

X″–ray″ tube. (Physics) A vacuum tube suitable for producing Röntgen rays.

04

Xanthamide

Xanth‐am″ide (?), n. [Xanthic + amide.] (Chem.) An amido derivative of xanthic acid obtained as a white crystalline substance, C2H5O.CS.NH2; — called also xanthogen amide.

05

Xanthate

Xan″thate (?), n. [See Xanthic.] (Chem.) A salt of xanthic; a xanthogenate.

06

Xanthelasma

‖Xan′the‐las″ma (?), n. [NL.; Gr. ξανθόσ yellow + ἔλασμα a metal plate.] (Med.) See Xanthoma.

07

Xanthian

Xan″thi‐an (?), a. Of or pertaining to Xanthus, an ancient town on Asia Minor; — applied especially to certain marbles found near that place, and now in the British Museum.

08

Xanthic

Xan″thic (?), a. [Gr. ξανθόσ yellow: cf. F. xanthique.]1. Tending toward a yellow color, or to one of those colors, green being excepted, in which yellow is a constituent, as sc...

09

Xanthide

Xan″thide (?), n. [See Xantho-.] (Chem.) A compound or derivative of xanthogen.

10

Xanthidium

‖Xan‐thid″i‐um (?), n.; pl.Xanthidia (#). [NL., fr. Gr. ξανθόσ yellow.] (Bot.) A genus of minute unicellular algæ of the desmids. These algæ have a rounded shape and are armed w...

11

Xanthin

Xan″thin (?), n. [Gr. ξανθόσ yellow.]1. (Physiol. Chem.) A crystalline nitrogenous body closely related to both uric acid and hypoxanthin, present in muscle tissue, and occasion...

12

Xanthine

{ Xan″thine (?), n. Also Xan″thin }. [Gr. ξανθόσ yellow.] (Physiol. Chem.) A white microcrystalline nitrogenous compound, C5H4O2N4, present in muscle tissue, in the liver, splee...

13

Xanthinine

Xan″thi‐nine (?), n. [Gr. ξανθόσ yellow + quinine.] (Chem.) A complex nitrogenous substance related to urea and uric acid, produced as a white powder; — so called because it for...

14

Xanthium

‖Xan″thi‐um (?), n. [NL., fr. Gr. ξάνθιον a plant used for dyeing the hair yellow, said to be the Xanthium strumarium, from ξανθόσ yellow.] (Bot.) A genus of composite plants in...

15

Xantho-

Xan″tho– (?). A combining form from Gr. ξανθόσ yellow; as in xanthocobaltic salts. Used also adjectively in chemistry.

16

Xanthocarpous

Xan′tho‐car″pous (?), a. [Xantho- + Gr. καρπόσ fruit.] (Bot.) Having yellow fruit.

17

Xanthochroi

‖Xan‐thoch″ro‐i (?), n. pl. [NL. See Xanthochroic.] (Ethnol.) A division of the Caucasian races, comprising the lighter-colored members.The Xanthochroi, or fair whites,... are t...

18

Xanthochroic

Xan′tho‐chro″ic (?), a. [Xantho- + Gr. χρόα color.] (Ethnol.) Having a yellowish or fair complexion; of or pertaining to the Xanthochroi.

19

Xanthochroid

Xan″tho‐chroid (?), a. [See under Xanthrochroic, -oid.] (Ethnol.) Having a yellowish or fair complexion. — n. A person having xanthochroid traits.

20

Xanthochroism

Xan‐thoch″ro‐ism (?), n. Abnormal coloration of feathers in which yellow replaces the normal color, as in certain parrots. It is commonly due to lack of the dark pigment which w...

21

Xanthodontous

Xan′tho‐don″tous (?), a. [Xantho- + Gr. οδοὔσ, οδὄντοσ, tooth.] Having yellow teeth.

22

Xanthogen

Xan″tho‐gen (?), n. [Xantho- + -gen.] (Chem.) (a) The hypothetical radical supposed to be characteristic of xanthic acid. (b) Persulphocyanogen.

23

Xanthogenate

Xan″tho‐gen‐ate (?), n.(Chem.) A salt of xanthic acid.

24

Xanthogenic

Xan′tho‐gen″ic (?), a. [See Xantho-, and -gen.] (Chem.) Producing a yellow color or compound; xanthic. See Xanthic acid, under Xanthic.

25

Xanthoma

‖Xan‐tho″ma (?), n. [NL. See Xantho-, and -oma.] (Med.) A skin disease marked by the development or irregular yellowish patches upon the skin, especially upon the eyelids; — cal...

26

Xanthomatous

Xan‐thom″a‐tous (?), a.(Med.) Of or pertaining to xanthoma.

27

Xanthomelanous

Xan′tho‐mel″a‐nous (?), a. [Pref. xantho- + Gr. �, �, black.] (Ethnol.) Of or pertaining to the lighter division of the Melanochroi, or those races having an olive or yellow com...