a variety of schist containing needles of hornblende that lie in parallel planes.
[hawrn-boo k] /ˈhɔrnˌbʊk/ noun 1. a leaf or page containing the alphabet, religious materials, etc., covered with a sheet of transparent and fixed in a frame with a handle, formerly used in teaching children to read. 2. a primer or of rudiments. /ˈhɔːnˌbʊk/ noun 1. a page bearing a religious text or the alphabet, held […]
/ˈhɔːnbɪ/ noun 1. Nick. born 1958, British writer; his books include the memoir Fever Pitch (1992; filmed 1997) and the bestselling novels About a Boy (1998; filmed 2002),How To Be Good (2001), and Juliet, Naked (2009)
noun 1. a chair, especially of the late 19th-century U.S., having a frame made from steer, elk, buffalo, or other animal horns.
- Horn clause
logic A set of atomic literals with at most one positive literal. Usually written L where n>=0, “conjuction (“AND”). If L is false the clause is regarded as a goal. Horn clauses can express a subset of statements of first order logic. The name “Horn Clause” comes from the logician Alfred Horn, who first pointed […]