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1. Any of various plants of the genus Lythrum, having spikes of purple or white flowers, especially the purple loosestrife.
2. Any of various perennial plants of the genus Lysimachia, having usually yellow flowers.

[Mistranslation of Latin lȳsimachīa (as if from Greek lusis, loosening + Greek makhē, battle), from Greek lūsimakheios, perhaps after Lūsimakhos, Lysimachos, Greek physician of the fifth or fourth century bc.]


1. (Plants) any of various primulaceous plants of the genus Lysimachia, esp the yellow-flowered L. vulgaris (yellow loosestrife). See also moneywort
2. (Plants) purple loosestrife a purple-flowered lythraceous marsh plant, Lythrum salicaria
3. (Plants) any of several similar or related plants, such as the primulaceous plant Naumburgia thyrsiflora (tufted loosestrife)
[C16: loose + strife, an erroneous translation of Latin lysimachia, as if from Greek lusimakhos ending strife, instead of from the name of the supposed discoverer, Lusimakhos]



1. any of various plants belonging to the genus Lysimachia, of the primrose family, having clusters of usu. yellow flowers.
2. any of several plants belonging to the genus Lythrum, of the loosestrife family. Compare purple loosestrife.
[1540–50; translation of Latin lȳsimachīa < Greek lȳsimácheios, allegedly after a certain Lysímachos]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.loosestrife - any of numerous herbs and subshrubs of the genus Lythrumloosestrife - any of numerous herbs and subshrubs of the genus Lythrum
genus Lythrum, Lythrum - loosestrife
Lythrum salicaria, purple loosestrife, spiked loosestrife - marsh herb with a long spike of purple flowers; originally of Europe but now rampant in eastern United States
grass poly, hyssop loosestrife, Lythrum hyssopifolia - annual with small solitary pink flowers; originally of Europe but widely naturalized in moist areas
subshrub, suffrutex - low-growing woody shrub or perennial with woody base
2.loosestrife - any of various herbs and subshrubs of the genus Lysimachia
genus Lysimachia, Lysimachia - loosestrife: a cosmopolitan genus found in damp or swampy terrain having usually yellow flowers; inclined to be invasive
gooseneck loosestrife, Lysimachia clethroides Duby - a variety of the loosestrife herb
Lysimachia nemorum, yellow pimpernel - trailing European evergreen with yellow flowers
garden loosestrife, Lysimachia vulgaris, yellow loosestrife - frequently considered a weed; Europe and Asia
Lysimachia terrestris, swamp candles - North American plant with spikes of yellow flowers, found in wet places
Lysimachia quadrifolia, whorled loosestrife - common North American yellow-flowered plant
herb, herbaceous plant - a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests