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a disease of plants, characterized by small, necrotic leaf or fruit lesions surrounded by a yellowish, halolike band, caused by any of several bacteria of the genus Pseudomonas.


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  • Halo car

    noun a unique automobile designed to draw attention to the brand Examples People come to see the halo car and then buy one of the regular models Word Origin allusion to the vehicle’s putting a “halo” over the brand name

  • Halocarbon

    [hal-uh-kahr-buh n] /ˌhæl əˈkɑr bən/ noun, Chemistry. 1. any of a class of compounds containing , one or more halogens, and sometimes hydrogen. halocarbon (hāl’ə-kär’bən) A compound, such as a fluorocarbon, that consists of carbon combined with one or more halogens. Halocarbons are typically nonflammable and nonreactive, though some halocarbons are broken down by ultraviolet […]

  • Haloed

    [hey-loh] /ˈheɪ loʊ/ noun, plural halos, haloes. 1. Also called nimbus. a geometric shape, usually in the form of a disk, circle, ring, or rayed structure, traditionally representing a radiant light around or above the head of a divine or sacred personage, an ancient or medieval monarch, etc. 2. an atmosphere or quality of glory, […]

  • Halocline

    [hal-uh-klahyn] /ˈhæl əˌklaɪn/ noun 1. a well-defined vertical salinity gradient in ocean or other saline water. halocline (hāl’ə-klīn’) A relatively sharp discontinuity in ocean salinity at a particular depth. In general, water with a higher concentration of salinity sinks below water that is less saline; therefore, saltier haloclines lie below less salty ones. An exception […]

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