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a. Any of various annual plants of the genus Amaranthus having dense green or reddish clusters of tiny flowers and including weeds, ornamentals, and species cultivated for their edible leaves and seeds. Also called pigweed.
b. The small edible seeds of several of these species.
2. An imaginary flower that never fades.
3. A deep reddish purple to dark or grayish, purplish red.
4. A dark red to purple azo dye.

[New Latin Amaranthus, genus name, alteration of Latin amarantus, from Greek amarantos, unfading : a-, not; see a-1 + marainein, to wither; see mer- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. poetic an imaginary flower that never fades
2. (Plants) any of numerous tropical and temperate plants of the genus Amaranthus, having tassel-like heads of small green, red, or purple flowers: family Amaranthaceae. See also love-lies-bleeding, tumbleweed, pigweed1
3. (Cookery) a synthetic red food colouring (E123), used in packet soups, cake mixes, etc
[C17: from Latin amarantus, from Greek amarantos unfading, from a-1 + marainein to fade]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈæm əˌrænθ)

1. any plant of the genus Amaranthus, some species of which are cultivated as food and some for their showy flower clusters or foliage.
2. an imaginary flower that never dies.
3. a purplish red, water-soluble powder, C20H11N2O10Na3, used as a dye.
[1545–55; < Latin amarantus, alter. of Greek amáranton unfading flower, n. use of neuter singular of amárantos=a- a-6 + -marantos, v. adj. of maraínein to fade]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.amaranth - seed of amaranth plants used as a native cereal in Central and South Americaamaranth - seed of amaranth plants used as a native cereal in Central and South America
caryopsis, grain - dry seed-like fruit produced by the cereal grasses: e.g. wheat, barley, Indian corn
2.amaranth - any of various plants of the genus Amaranthus having dense plumes of green or red flowersamaranth - any of various plants of the genus Amaranthus having dense plumes of green or red flowers; often cultivated for food
Amaranthus, genus Amaranthus - large widely distributed genus of chiefly coarse annual herbs
Amaranthus albus, Amaranthus graecizans, tumbleweed - bushy plant of western United States
Amaranthus caudatus, love-lies-bleeding, velvet flower, tassel flower - young leaves widely used as leaf vegetables; seeds used as cereal
Amaranthus cruentus, Amaranthus hybridus erythrostachys, Amaranthus hybridus hypochondriacus, gentleman's-cane, purple amaranth, red amaranth, prince's-feather, prince's-plume - tall showy tropical American annual having hairy stems and long spikes of usually red flowers above leaves deeply flushed with purple; seeds often used as cereal
Amaranthus hypochondriacus, pigweed - leaves sometimes used as potherbs; seeds used as cereal; southern United States to Central America; India and China
herb, herbaceous plant - a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
(201 l)describedidentical results, as the authors compared susceptible and resistant biotypes of Bidens subalternans resistant to ALS inhibitor herbicides, as well as in studies with Amaranthus retroflexus biotypes resistant to ALS inhibitor herbicides that did not find differences in TDMM when compared to the susceptible biotype (Sibony & Rubin, 2003).
Interference of redroot pigweed (Amaranthus retroflexus) with snap beans.
Biocontrol of Amaranthus retroflexus and Rumes crispus by NLP phytotoxine, a selective bioherbicide.
Marinov-Serafimov, "A study of allelopathic effect of Amaranthus retroflexus (L.) and Solanum nigrum (L.) in different soybean genotypes," Herbologia, vol.
Allelopathic effects of sorghum extracts on Amaranthus retroflexus seed germination and growth.
tabaci indicates that 1st adult of the year to appear almost after 3rd week of January, usually on Convolvulus arvensis and Euphorbia spp., or cultivated plants such as Brassica spp., [3], and Echinochloa crus-galli L, Amaranthus retroflexus L, Solanum nigrum L.
The following plant species were identified: Amaranthus retroflexus, Artemisia vulgaris, Erigeron canadensis, Sisymbrium loeselii and Cucurbita pepo.
ex Muhl e Amaranthus retroflexus L.] e produtividade de abobora (Curcubita pepo L.) quando os herbicidas clomazone+ethalfluralin foram associados ao halosulfuron-methyl em aplicacao de pre-semeadura.
A familiar one -- perhaps too familiar -- is redroot pigweed (Amaranthus retroflexus).
Estudos realizados por KUROZAWA E PAVAN (2005) tambem verificaram a sobrevivencia de Xanthomonas vesicatoria (Doidge), um dos agentes causais da mancha bacteriana do tomateiro, em plantas espontaneas como Amaranthus retroflexus L., Chenopodium album L., Datura spp., Digitaria sanguinalis (L.) Scop, Portulaca oleraceae, Setaria glauca (Poir.) Roem.
Varasteh, "Immunochemical characterization of Amaranthus retroflexus pollen extract: extensive cross-reactive allergenic components among the four species of Amaranthaceae/Chenopodiaceae," Iranian Journal of Allergy, Asthma and Immunology, vol.