/pig"weed'/, n.
1. any goosefoot of the genus Chenopodium, esp. C. album.
2. any of certain amaranths, as Amaranthus retroflexus.
[1795-1805; PIG1 + WEED1]

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      any of several coarse annual plants of cosmopolitan distribution that are often troublesome weeds. Several of them belong to the genus Amaranthus, of the family Amaranthaceae. Prostrate pigweed, or mat amaranth (A. graecizans), grows along the ground surface with stems rising at the tips; spiny pigweed, or spiny amaranth (A. spinosus), has spines at the base of the leafstalks; and rough pigweed, or redroot (A. retroflexus), is a stout plant up to 3 metres (about 10 feet) tall.

 Other pigweeds include the edible Chenopodium album (see photograph—>), also called lamb's quarters. Winged pigweed (Cycloloma atriplicifolium) is a much-branched upright plant with scalloped leaves; it grows to 60 cm (about 2 feet) tall and is often seen on sandy soils.

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Universalium. 2010.

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Look at other dictionaries:

  • Pigweed — Pig weed , n. (Bot.) A name of several annual weeds. See {Goosefoot}, and {Lamb s quarters}. [1913 Webster] …   The Collaborative International Dictionary of English

  • Pigweed — can mean any of a number of weedy plants which may be used as pig fodder:* Amaranthus species * Chenopodium species * Portulaca speciesFor more information visit http://www.ppws.vt.edu/scott/weed id/amare.htm …   Wikipedia

  • pigweed — [pig′wēd΄] n. ☆ 1. any of several coarse weeds (genus Amaranthus) of the amaranth family, with dense, bristly clusters of small green flowers 2. any of several goosefoots, esp. lamb s quarters …   English World dictionary

  • pigweed — /ˈpɪgwid/ (say pigweed) noun 1. a widely distributed, yellow flowered species of portulaca, Portulaca oleracea, used as a salad plant and potherb. 2. any of various other plants which resemble pigweed or which have been used as fodder for pigs,… …  

  • pigweed — žaliasis burnotis statusas T sritis vardynas apibrėžtis Burnotinių šeimos daržovinis augalas (Amaranthus viridis). atitikmenys: lot. Amaranthus viridis angl. green amaranth; pigweed; slender amaranth; tropical green amaranth vok. grüner Amarant… …   Lithuanian dictionary (lietuvių žodynas)

  • pigweed — burnotis statusas T sritis vardynas apibrėžtis Burnotinių (Amaranthaceae) šeimos augalų gentis (Amaranthus). atitikmenys: lot. Amaranthus angl. amaranth; lovelies bleeding; pigweed vok. Amaranth; Fuchsschwanz rus. амарант; амарантус; щирица lenk …   Dekoratyvinių augalų vardynas

  • pigweed — noun Date: circa 1801 any of various vigorous weedy plants especially of the goosefoot or amaranth families …   New Collegiate Dictionary

  • pigweed — noun Any of various weedy plants sometimes used as pig fodder: Amaranthus, Chenopodium album, and Portulaca …   Wiktionary

  • pigweed — pig·weed pig .wēd n any of several plants of the genus Amaranthus (as A. retroflexus and A. hybridus) producing pollen that is an important hay fever allergen …   Medical dictionary

  • Pigweed — Amaranthus (E) …   EthnoBotanical Dictionary

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