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toxin

(Encyclopedia)toxin, poison produced by living organisms. Toxins are classified as either exotoxins or endotoxins. Exotoxins are a diverse group of soluble proteins released into the surrounding tissue by living ba...

rotavirus

(Encyclopedia)rotavirus, double-stranded RNA virus, genus Rotavirus, with a wheellike appearance that can cause severe watery diarrhea and vomiting, sometimes leading to severe dehydration and death. The virus is t...

Dove, Rita

(Encyclopedia)Dove, Rita, 1952–, American poet, b. Akron, Ohio, studied Iowa Writers' Workshop (M.F.A., 1977). Her first poetry collection, Ten Poems, was published in 1977. Her verse is at once concise, precise,...

alyssum

(Encyclopedia)alyssum əlĭsˈəm [key], any species of the genus Alyssum of the family Cruciferae (or Brassicaceae; mustard family), annual and perennial herbs native to the Mediterranean area. A few species, nota...

fennel

(Encyclopedia)fennel, common name for several perennial herbs, genus Foeniculum vulgare of the family Umbelliferae (parsley family), related to dill. The strawlike foliage and the seeds are licorice-scented and are...

fer-de-lance

(Encyclopedia)fer-de-lance fĕrˌ-də-lănsˈ [key], highly poisonous snake, Bothrops atrox, found in tropical South America and the West Indies. A pit viper, related to the bushmaster and the rattlesnake, it has h...

hawkweed

(Encyclopedia)hawkweed, any species of the genus Hieracium of the family Asteraceae (aster family), widely distributed perennials, chiefly of open fields. The small, dandelionlike flower heads are borne in clusters...

hop

(Encyclopedia)hop, herbaceous perennial vine of the family Moraceae (mulberry family), widely cultivated since early times for brewing purposes. The commercial hop (Humulus lupulus) is native to Eurasia but is now ...

Jinan

(Encyclopedia)Jinan tsĭnˈänˈ [key], city (1994 est. pop. 1,659,900), capital of Shandong prov., E China. It lies 3 mi (4.8 km) S of the Huang He (Yellow River) and is a railroad junction on the network linking ...

metaphor

(Encyclopedia)metaphor [Gr.,=transfer], in rhetoric, a figure of speech in which one class of things is referred to as if it belonged to another class. Whereas a simile states that A is like B, a metaphor states th...