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XDR TB: Extensively Drug-resistant TB. MDR TB that is also resistant to fluoroquinilones and at least one of three injectable drugs (i.e., amikacin, kanamycin, or capreomycin). Xenon: An inert gaseous element. Xeric: Of, pertaining to, or having dry or desert-like conditions. Xerioscope: A new landscaping design that accounts for water and energy efficiency yet requires less maintenance by exemplifying good planning, efficient irrigation processes, soil improvement, easily foliage conservation, and good maintenance. Xeriscape: Creative landscaping for water and energy efficiency and lower maintenance. The seven xeriscape principles are: good planning and design; practical lawn areas; efficient irrigation; soil improvement; use of mulches; low water demand plants; good maintenance. Xeriscaping: Climate-tuned landscaping that minimizes outdoor water use while maintaining soil integrity and building aesthetics. Typically includes emphasis on native plantings, mulching, and no or limited drip/subsurface irrigation. Xerophile: An organism with enzyme systems that enable it to grow optimally in dry places (deserts). Xylene: A flammable solvent, used to dissolve or loosen sludge. Found in paints, varnishes, lacquers, solvents, xylenes are included in the formulations of paints, adhesives, and some furniture products, and are observed off-gassing. |
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