(n) a rare genetic condition characterized by an eruption of exposed skin occurring in childhood and photosensitivity with severe sunburn; inherited as a recessive autosomal trait in which DNA repair processes are defective so they are more likely to chromosome breaks and cancers when exposed to ultraviolet light
(n) forming an image by the action of light on a specially coated charged plate; the latent image is developed with powders that adhere only to electrically charged areas
(n) abnormal dryness of the conjunctiva and cornea of the eyes; may be due to a systemic deficiency of vitamin A, Syn.xeroma, conjunctivitis arida, xerophthalmus
‖n. [ NL., fr. Gr. xhro`s dry + de`rma skin. ] (Med.) (a) Ichthyosis. (b) A skin disease characterized by the presence of numerous small pigmented spots resembling freckles, with which are subsequently mingled spots of atrophied skin. [ 1913 Webster ]
a. [ Gr. xhro`s dry + citraconic. ] (Chem.) Pertaining to, or designating, an acid, C8H12O4, related to fumaric acid, and obtained from citraconic acid as an oily substance having a bittersweet taste; -- so called from its tendency to form its anhydride. [ 1913 Webster ]
n. [ L. xerophagia, Gr. &unr_;; xhro`s dry + &unr_; to eat. ] Among the primitive Christians, the living on a diet of dry food in Lent and on other fasts. [ 1913 Webster ]
‖n. [ L., fr. Gr. &unr_;; xhro`s dry + &unr_; the eye. See Ophthalmia. ] (Med.) An abnormal dryness of the eyeball produced usually by long-continued inflammation and subsequent atrophy of the conjunctiva. [ 1913 Webster ]
pr. n. A small genus of North American herbs having grasslike basal leaves: squaw grass; sometimes placed in family Melanthiaceae. Syn. -- genus Xerophyllum. [ WordNet 1.5 ]
n. A plant adapted for life with a limited supply of water; compare hydrophyte and mesophyte. Syn. -- desert plant, xerophytic plant, xerophile, xerophilous plant. [ WordNet 1.5 ]
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เช่น Secretary of State=รัฐมนตรีต่างประเทศของสหรัฐฯ (ในภาพตัวอย่าง),
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