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单词 locust
释义

locust


locustblack locustRobinia pseudoacacia

lo·cust

L0225700 (lō′kəst)n.1. Any of various short-horned grasshoppers that sometimes migrate in immense swarms, devouring vegetation and crops.2. A cicada, especially a periodical cicada.3. a. Any of several trees of the pea family bearing long pods, especially the black locust, honey locust, and carob.b. The wood of any of these trees.
[Middle English, from Old French locuste, from Latin locusta. Sense 3a, probably from the resemblance of a carob pod to a grasshopper and the use of both as subsistence food in drier regions of the Near East.]

locust

(ˈləʊkəst) n1. (Animals) any of numerous orthopterous insects of the genera Locusta, Melanoplus, etc, such as L. migratoria, of warm and tropical regions of the Old World, which travel in vast swarms, stripping large areas of vegetation. See also grasshopper1 Compare seventeen-year locust2. (Plants) Also called: locust tree or false acacia a North American leguminous tree, Robinia pseudoacacia, having prickly branches, hanging clusters of white fragrant flowers, and reddish-brown seed pods3. (Plants) the yellowish durable wood of this tree4. (Plants) any of several similar trees, such as the honey locust and carob[C13 (the insect): from Latin locusta locust; applied to the tree (C17) because the pods resemble locusts] ˈlocust-ˌlike adj

lo•cust

(ˈloʊ kəst)

n. 1. Also called short-horned grasshopper. any of several grasshoppers of the family Acrididae, having short antennae and commonly migrating in swarms that strip the vegetation from large areas. 2. any of various cicadas, as the seventeen-year locust. 3. any North American tree of the genus Robinia, of the legume family, esp. R. pseudoacacia, having pinnate leaves and clusters of fragrant white flowers. 4. the durable wood of this tree. 5. any of various other trees, as the carob and the honey locust. [1150–1200; Middle English < Latin locusta grasshopper] lo′cust•like`, adj.
Thesaurus
Noun1.locust - migratory grasshoppers of warm regions having short antennaelocust - migratory grasshoppers of warm regions having short antennaeacridid, short-horned grasshopper - grasshopper with short antennaeLocusta migratoria, migratory locust - Old World locust that travels in vast swarms stripping large areas of vegetationmigratory grasshopper - serious pest of grain-growing and range areas of central and western United States
2.locust - hardwood from any of various locust treeslocust tree, locust - any of various hardwood trees of the family Leguminosaewood - the hard fibrous lignified substance under the bark of trees
3.locust - any of various hardwood trees of the family Leguminosaelocust - any of various hardwood trees of the family Leguminosaelocust treeFabaceae, family Fabaceae, family Leguminosae, legume family, Leguminosae, pea family - a large family of trees, shrubs, vines, and herbs bearing bean pods; divided for convenience into the subfamilies Caesalpiniaceae; Mimosaceae; Papilionaceaecourbaril, Hymenaea courbaril - West Indian locust tree having pinnate leaves and panicles of large white or purplish flowers; yields very hard tough woodlocust - hardwood from any of various locust treesGleditsia aquatica, swamp locust, water locust - honey locust of swamps and bottomlands of southern United States having short oval pods; yields dark heavy woodGleditsia triacanthos, honey locust - tall usually spiny North American tree having small greenish-white flowers in drooping racemes followed by long twisting seed pods; yields very hard durable reddish-brown wood; introduced to temperate Old WorldRobinia pseudoacacia, yellow locust, black locust - large thorny tree of eastern and central United States having pinnately compound leaves and drooping racemes of white flowers; widely naturalized in many varieties in temperate regionsclammy locust, Robinia viscosa - small rough-barked locust of southeastern United States having racemes of pink flowers and glutinous branches and seedstree - a tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms
Translations
蝗虫

locust

(ˈləukəst) noun a type of large insect of the grasshopper family, found in Africa and Asia, which moves in very large groups and destroys growing crops by eating them. 蝗蟲 蝗虫

locust


locust,

in botany, any species of the genus Robinia, deciduous trees or shrubs of the family Leguminosae (pulsepulse,
in botany, common name for members of the Fabaceae (Leguminosae), a large plant family, called also the pea, or legume, family. Numbering about 650 genera and 17,000 species, the family is third largest, after the asters and the orchids.
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 family) native to the United States and Mexico. The locusts have pendent clusters of flowers similar to the sweet pea; these are very fragrant in the black, or yellow, locust (R. pseudoacacia), which is the common locust, sometimes also called acacia, or false acacia. This species has been widely planted in the past for ornamental purposes, for erosion control, and for its useful wood, but the locust borer has killed it in many areas. Its heavy, hard, durable wood has been used extensively for treenails in shipbuilding, for fence posts, for turning, and for fuel. The shoots and bark of the black locust are poisonous. The honey locusthoney locust,
leguminous deciduous tree (Gleditsia triacanthos) of the family Leguminosae (pulse family), native to the eastern half of the United States but planted as a shade tree in many regions of the United States and in other countries, where it is sometimes
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 belongs to a different genus of this family, as does the carobcarob
, leguminous evergreen tree (Ceratonia siliqua) of the family Leguminosae (pulse family), native to Mediterranean regions but cultivated in other warm climates, including Florida and California.
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, which is thought to have been the biblical locust. Locust is classified in the division MagnoliophytaMagnoliophyta
, division of the plant kingdom consisting of those organisms commonly called the flowering plants, or angiosperms. The angiosperms have leaves, stems, and roots, and vascular, or conducting, tissue (xylem and phloem).
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, class Magnoliopsida, order Rosales, family Leguminosae.

locust,

in zoology, name for certain migratory members of the short-horned grasshoppergrasshopper,
name applied to almost 9,000 different species of singing, jumping insects in two families of the order Orthoptera. Grasshoppers are long, slender, winged insects with powerful hind legs and strong mandibles, or mouthparts, adapted for chewing.
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 family (Acrididae). Like other members of this family, locusts have antennae shorter than their bodies, song-producing organs on the forewings and hind legs, and hind legs well developed for jumping. Locusts lay their eggs in the ground; when the nymphs hatch they are wingless and move across the land by walking. Typical locusts (e.g., species of the Old World genus Locusta) have two distinct adult forms, a short-winged migratory form and a long-winged nonmigratory form.

Locust migration is an occasional event, which follows an enormous buildup of a locust population. The young locusts, called nymphs, only develop into the migratory form under certain environmental conditions, which also lead to a population increase. Not all of the environmental factors involved are known, but one is hot weather. The first generation produced after a migration is not usually migratory.

When migration occurs the locust swarms are so dense as to blacken the sky over an area of many miles. When the insects finally settle, after traveling hundreds or thousands of miles, they begin to feed, consuming enormous quantities of vegetation. Locusts are serious agricultural pests. Spraying with solutions of arsenic and overturning the soil can destroy the eggs.

Locusts are most common in Africa and Asia, but also occur in the United States. The Rocky Mountain locust, Melanopolus spretus, a species that is now apparently extinct, destroyed millions of dollars worth of crops on the Great Plains between 1874 and 1877. A single swarm contained an estimated 124 billion insects. Cicadascicada
, large, noise-producing insect of the order Homoptera, with a stout body, a wide, blunt head, protruding eyes, and two pairs of membranous wings. The front wings, which are longer than the rear pair, extend beyond the insect's abdomen.
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 are sometimes called locusts in the United States but are related to aphids and leafhoppers, not grasshoppers.

Locusts are classified in the phylum ArthropodaArthropoda
[Gr.,=jointed feet], largest and most diverse animal phylum. The arthropods include crustaceans, insects, centipedes, millipedes, spiders, scorpions, and the extinct trilobites.
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, class Insecta, order Orthoptera, suborder Caelifera, family Acrididae.

locust

Wood of the locust tree; coarse-grained, strong, hard, decay-resistant, and durable. See also: Douglas fir

locust

[′lō·kəst] (botany) Either of two species of commercially important trees, black locust (Robinia pseudoacacia) and honey locust (Gladitsia triacanthos), in the family Leguminosae. (invertebrate zoology) The common name for various migratory grasshoppers of the family Locustidae.

locust, black locust, red locust

Wood of the locust tree; coarse-grained, strong, hard, decay-resistant, and durable; used in construction, esp. for posts.

locust

tree representing elegance. [Tree Symbolism: Flora Symbolica, 175]See: Elegance

locust

1. any of numerous orthopterous insects of the genera Locusta, Melanoplus, etc., such as L. migratoria, of warm and tropical regions of the Old World, which travel in vast swarms, stripping large areas of vegetation 2. a North American leguminous tree, Robinia pseudoacacia, having prickly branches, hanging clusters of white fragrant flowers, and reddish-brown seed pods 3. the yellowish durable wood of this tree 4. any of several similar trees, such as the honey locust and carob

LOCUST


AcronymDefinition
LOCUSTLow-Cost UAV (Unmanned Aerial Vehicle) Swarming Technology

locust


Related to locust: Desert locust, locust tree
  • noun

Synonyms for locust

noun migratory grasshoppers of warm regions having short antennae

Related Words

  • acridid
  • short-horned grasshopper
  • Locusta migratoria
  • migratory locust
  • migratory grasshopper

noun hardwood from any of various locust trees

Related Words

  • locust tree
  • locust
  • wood

noun any of various hardwood trees of the family Leguminosae

Synonyms

  • locust tree

Related Words

  • Fabaceae
  • family Fabaceae
  • family Leguminosae
  • legume family
  • Leguminosae
  • pea family
  • courbaril
  • Hymenaea courbaril
  • locust
  • Gleditsia aquatica
  • swamp locust
  • water locust
  • Gleditsia triacanthos
  • honey locust
  • Robinia pseudoacacia
  • yellow locust
  • black locust
  • clammy locust
  • Robinia viscosa
  • tree
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