- sporadic E
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A meteorological phenomenon where radio waves above a certain frequency are reflected in the atmospheric E region, allowing these radio waves to be received in distances up to 1,200 miles.
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sporadic E
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sporadic — SPORÁDIC, Ă, sporadici, ce, adj. (Adesea adverbial) Care apare, care se manifestă pe ici, pe colo sau din când în când; lipsit de continuitate; distanţat, rar; împrăştiat, dispersat, răzleţ, izolat; întâmplător. – Din fr. sporadique. Trimis de… … Dicționar Român
Sporadic — Spo*rad ic ( r[a^]d [i^]k), a. [Gr. ? scattered, fr. ?, ?, scattered, fr. ? to sow seed, to scatter like seed: cf. F. sporadique. See {Spore}.] Occurring singly, or apart from other things of the same kind, or in scattered instances; separate;… … The Collaborative International Dictionary of English
sporadic — sporadic. См. спорадический. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) … Молекулярная биология и генетика. Толковый словарь.
sporadic — I adjective appearing at intervals, casual, changeable, desultory, disconnected, discontinuous, disjunct, dispersed, erratic, fitful, fluctuating, immethodical, inconstant, indefinite, infrequent, intermittent, intermitting, inusitatus, irregular … Law dictionary
sporadic — 1650s (implied in sporadical), from M.L. sporadicus scattered, from Gk. sporadikos scattered, from sporas (gen. sporados) scattered, from spora a sowing (see SPORE (Cf. spore)). Originally a medical term, occurring in scattered instances; the… … Etymology dictionary
sporadic — *occasional, rare, scarce, *infrequent, uncommon Analogous words: scattered, dispersed (see SCATTER): sparse, exiguous, *meager … New Dictionary of Synonyms
sporadic — [adj] on and off bits and pieces*, desultory, few, fitful, fits and starts*, hit ormiss*, infrequent, intermittent, irregular, isolated, occasional, on again off again*, random, rare, scarce, scattered, seldom, semioccasional, spasmodic, spotty,… … New thesaurus
sporadic — ► ADJECTIVE ▪ occurring at irregular intervals or only in a few places. DERIVATIVES sporadically adverb. ORIGIN Greek sporadikos, from sporas scattered … English terms dictionary
sporadic — [spə rad′ik] adj. [ML sporadicus < Gr sporadikos < sporas, scattered: for IE base see SPORE] 1. happening from time to time; not constant or regular; occasional 2. widely separated from others, scattered, or isolated in occurrence;… … English World dictionary
sporadic E — sporadic E, an area of high ionization in the E layer of the ionosphere which interferes with the normal reflection of short wave radio … Useful english dictionary
Sporadic-E — Normalerweise passieren Funksignale oberhalb der normalen Grenzfrequenz der E Schicht (rot) diese. Während eines sporadischen E Ereignisses werden die Signale (blau) entweder ganz oder teilweise in der E Schicht gebrochen, was… … Deutsch Wikipedia
