billow cloud

a cloud consisting of broad, parallel bands oriented perpendicularly to the wind. Also called undulatus.

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Universalium. 2010.

Look at other dictionaries:

  • billow cloud — noun : a long narrow cloud or usually a series of such clouds roughly parallel to each other caused by the flow of one layer of air over another producing waves at their interface the relatively cold crests of which are cloud capped and their… …   Useful english dictionary

  • billow — ► NOUN 1) a large undulating mass of cloud, smoke, or steam. 2) archaic a large sea wave. ► VERB 1) (of fabric) fill with air and swell outwards. 2) (of smoke, cloud, or steam) move or flow outward with an undulating motion. DERIVATIVES billowy …   English terms dictionary

  • cloud — [n1] mass of water particles in air billow, brume, darkness, dimness, film, fog, fogginess, frost, gloom, haze, haziness, mare’s tail*, mist, murk, nebula, nebulosity, obscurity, ol’ buttermilk sky*, overcast, pea soup*, pother, puff, rack, scud …   New thesaurus

  • cloud — I (New American Roget s College Thesaurus) n. haze (see cloudiness, obscurity); flight (see assemblage). II (Roget s IV) n. 1. [Fog at a distance from the earth] Syn. haze, mist, rack, fogginess, haziness, film, puff, billow, frost, nebula,… …   English dictionary for students

  • billow — bil|low1 [ˈbıləu US lou] v 1.) [i]also billow out if something made of cloth billows, it moves in the wind ▪ Her long skirt billowed in the breeze. 2.) if a cloud or smoke billows, it rises in a round mass billow out of/up etc ▪ There was smoke… …   Dictionary of contemporary English

  • billow — I UK [ˈbɪləʊ] / US [ˈbɪloʊ] verb [intransitive] Word forms billow : present tense I/you/we/they billow he/she/it billows present participle billowing past tense billowed past participle billowed 1) to be filled with air and swell out like a sail… …   English dictionary

  • cloud — I UK [klaʊd] / US noun Word forms cloud : singular cloud plural clouds *** 1) [countable/uncountable] a white or grey mass of very small drops of water in the sky A few white clouds drifted across the sky. There s more cloud than yesterday. •… …   English dictionary

  • billow — bil|low1 [ bılou ] verb intransitive 1. ) to be filled with air and swell out like a sail: The sheets billowed on the clothes line. billow out: His cloak billowed out behind him. 2. ) if smoke or steam billows, it rises or moves in clouds: Smoke… …   Usage of the words and phrases in modern English

  • cloud — I. noun Usage: often attributive Etymology: Middle English, rock, cloud, from Old English clūd; perhaps akin to Greek gloutos buttock Date: 14th century 1. a visible mass of particles of condensed vapor (as water or ice) suspended in the… …   New Collegiate Dictionary

  • billow — [[t]bɪ̱loʊ[/t]] billows, billowing, billowed 1) VERB When something made of cloth billows, it swells out and moves slowly in the wind. The curtains billowed in the breeze... [V out] Her pink dress billowed out around her. [V ing] ...the billowing …   English dictionary

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