| alloantibody | (noun) an antibody that occurs naturally against foreign tissues from a person of the same species | Synonyms: isoantibody |
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| allocable | (adjective) capable of being distributed | Synonyms: allocatable, apportionable |
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| allocatable | (adjective) capable of being distributed | Synonyms: allocable, apportionable |
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| allocate | (verb) distribute according to a plan or set apart for a special purpose | Synonyms: apportion |
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| allocation | (noun) the act of distributing by allotting or apportioning; distribution according to a plan | Synonyms: allotment, apportioning, apportionment, assignation, parceling, parcelling |
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| (noun) (computer science) the assignment of particular areas of a magnetic disk to particular data or instructions | Synonyms: storage allocation |
| (noun) a share set aside for a specific purpose | Synonyms: allotment |
| allocator | (noun) a person with authority to allot or deal out or apportion | Synonyms: distributor |
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| allochronic | (adjective) (of taxa) occurring in different geologic times | - |
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| allochthonous | (adjective) of rocks, deposits, etc.; found in a place other than where they and their constituents were formed | - |
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| allocution | (noun) (rhetoric) a formal or authoritative address that advises or exhorts | - |
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| allogamous | (adjective) relating to cross-fertilization in plants | - |
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| allogamy | (noun) cross-fertilization in plants | - |
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| allogeneic | (adjective) denoting or relating to cells or tissues from individuals belonging to the same species but genetically dissimilar (and hence immunologically incompatible) | - |
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| allograft | (noun) tissue or organ transplanted from a donor of the same species but different genetic makeup; recipient's immune system must be suppressed to prevent rejection of the graft | Synonyms: homograft |
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| allograph | (noun) a variant form of a grapheme, as `m' or `M' or a handwritten version of that grapheme | - |
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| (noun) a signature written by one person for another | - |
| allographic | (adjective) of or relating to an allograph | - |
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| allomerism | (noun) (chemistry) variability in chemical composition without variation in crystalline form | - |
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| allomerous | (adjective) pertaining to allomerism | - |
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| allometric | (adjective) relating to or marked by allometry | - |
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| allometry | (noun) the study of the relative growth of a part of an organism in relation to the growth of the whole | - |
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| allomorph | (noun) a variant phonological representation of a morpheme | - |
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| (noun) any of several different crystalline forms of the same chemical compound | - |
| allomorphic | (adjective) pertaining to allomorphs | - |
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| allopathic | (adjective) of or relating to the practice of allopathy | - |
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| allopathy | (noun) the usual method of treating disease with remedies that produce effects differing from those produced by the disease itself | - |
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| allopatric | (adjective) (of biological species or speciation) occurring in areas isolated geographically from one another | - |
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| allopatry | (noun) the occurrence of related organisms in separate geographical areas with no overlap | - |
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| allophone | (noun) (linguistics) any of various acoustically different forms of the same phoneme | - |
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| allophonic | (adjective) pertaining to allophones | - |
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| allopurinol | (noun) a drug (trade name Zyloprim) used to treat gout and other conditions in which there is an excessive buildup of uric acid | Synonyms: Zyloprim |
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| allosaur | (noun) late Jurassic carnivorous dinosaur; similar to but somewhat smaller than tyrannosaurus | Synonyms: allosaurus |
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| allosaurus | (noun) late Jurassic carnivorous dinosaur; similar to but somewhat smaller than tyrannosaurus | Synonyms: allosaur |
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| allot | (verb) allow to have | Synonyms: accord, grant |
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| (verb) give out | Synonyms: assign, portion |
| (verb) administer or bestow, as in small portions | Synonyms: administer, deal, deal out, dish out, dispense, distribute, dole out, lot, mete out, parcel out, shell out |
| allotment | (noun) the act of distributing by allotting or apportioning; distribution according to a plan | Synonyms: allocation, apportioning, apportionment, assignation, parceling, parcelling |
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| (noun) a share set aside for a specific purpose | Synonyms: allocation |
| allotrope | (noun) a structurally different form of an element | - |
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| allotropic | (adjective) of or related to or exhibiting allotropism | Synonyms: allotropical |
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| allotropical | (adjective) of or related to or exhibiting allotropism | Synonyms: allotropic |
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| allotropism | (noun) the phenomenon of an element existing in two or more physical forms | Synonyms: allotropy |
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| allotropy | (noun) the phenomenon of an element existing in two or more physical forms | Synonyms: allotropism |
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| allotted | (adjective) given as a task | - |
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| allover | (adjective) covering the entire surface | - |
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| allow | (verb) allow or plan for a certain possibility; concede the truth or validity of something | Synonyms: take into account |
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| (verb) give or assign a resource to a particular person or cause | Synonyms: appropriate, earmark, reserve, set aside |
| (verb) consent to, give permission; permit | Synonyms: countenance, let, permit |
| (verb) allow the presence of or allow (an activity) without opposing or prohibiting | Synonyms: permit, tolerate |
| (verb) let have | Synonyms: grant |
| (verb) grant as a discount or in exchange | - |
| (verb) make it possible through a specific action or lack of action for something to happen | Synonyms: let, permit |
| (verb) allow the other (baseball) team to score | Synonyms: give up |
| (verb) make a possibility or provide opportunity for; permit to be attainable or cause to remain | Synonyms: allow for, leave, provide |
| (verb) afford possibility | Synonyms: admit |
| allowable | (adjective) that may be permitted especially as according to rule | Synonyms: permissible |
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| (adjective) deserving to be allowed or considered | - |
| (adjective) deductible according to the tax laws | - |
| allowably | (adverb) in a permissible manner | Synonyms: permissibly |
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| allowance | (noun) the act of allowing | - |
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| (noun) a permissible difference; allowing some freedom to move within limits | Synonyms: leeway, margin, tolerance |
| (noun) an amount allowed or granted (as during a given period) | - |
| (noun) an amount added or deducted on the basis of qualifying circumstances | Synonyms: adjustment |
| (noun) a sum granted as reimbursement for expenses | - |
| (noun) a reserve fund created by a charge against profits in order to provide for changes in the value of a company's assets | Synonyms: allowance account, valuation account, valuation reserve |
| (verb) put on a fixed allowance, as of food | - |
| alloy | (noun) the state of impairing the quality or reducing the value of something | Synonyms: admixture |
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| (noun) a mixture containing two or more metallic elements or metallic and nonmetallic elements usually fused together or dissolving into each other when molten | Synonyms: metal |
| (verb) lower in value by increasing the base-metal content | Synonyms: debase |
| (verb) make an alloy of | - |
| alloyed | (adjective) (used of metals) blended to obtain a desired property | - |
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| (adjective) (used of metals) debased by mixture with an inferior element | - |
| ballock | (noun) one of the two male reproductive glands that produce spermatozoa and secrete androgens | Synonyms: ball, bollock, egg, nut, orchis, testicle, testis |
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| balloon | (noun) large tough nonrigid bag filled with gas or heated air | - |
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| (noun) small thin inflatable rubber bag with narrow neck | - |
| (verb) become inflated | Synonyms: billow, inflate |
| (verb) ride in a hot-air balloon | - |
| balloonfish | (noun) similar to but smaller than porcupinefish | Synonyms: Diodon holocanthus |
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| ballooning | (noun) flying in a balloon | - |
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| balloonist | (noun) someone who flies a balloon | - |
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| ballot | (noun) a choice that is made by counting the number of people in favor of each alternative | Synonyms: balloting, vote, voting |
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| (noun) a document listing the alternatives that is used in voting | - |
| (verb) vote by ballot | - |
| balloting | (noun) a choice that is made by counting the number of people in favor of each alternative | Synonyms: ballot, vote, voting |
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| ballottement | (noun) a palpatory technique for feeling a floating object in the body (especially for determining the position of a fetus by feeling the rebound of the fetus after a quick digital tap on the wall of the uterus) | - |
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| callosectomy | (noun) severing the corpus callosum so that communication between the cerebral hemispheres is interrupted (in cases of severe intractable epilepsy) | Synonyms: callosotomy |
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| callosity | (noun) devoid of passion or feeling; hardheartedness | Synonyms: callousness, hardness, insensibility, unfeelingness |
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| (noun) an area of skin that is thick or hard from continual pressure or friction (as the sole of the foot) | Synonyms: callus |
| callosotomy | (noun) severing the corpus callosum so that communication between the cerebral hemispheres is interrupted (in cases of severe intractable epilepsy) | Synonyms: callosectomy |
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| callous | (adjective) emotionally hardened | Synonyms: indurate, pachydermatous |
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| (adjective) having calluses; having skin made tough and thick through wear | Synonyms: calloused, thickened |
| (verb) make insensitive or callous; deaden feelings or morals | Synonyms: cauterise, cauterize |
| calloused | (adjective) having calluses; having skin made tough and thick through wear | Synonyms: callous, thickened |
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| callously | (adverb) in a callous way | Synonyms: unfeelingly |
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| callousness | (noun) devoid of passion or feeling; hardheartedness | Synonyms: callosity, hardness, insensibility, unfeelingness |
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| callow | (adjective) young and inexperienced | Synonyms: fledgling, unfledged |
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| callowness | (noun) lacking and evidencing lack of experience of life | Synonyms: jejuneness, juvenility |
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| codswallop | (noun) nonsensical talk or writing | Synonyms: applesauce, folderol, rubbish, trash, tripe, trumpery, wish-wash |
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| crystallogen | (noun) any chemical element that belongs to the carbon group. | Synonyms: carbon group element, Group 14 element, tetragen, tetrel |
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| crystallographer | (noun) a specialist in crystallography | - |
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| crystallography | (noun) the branch of science that studies the formation and structure of crystals | - |
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| cumswallow | (verb) to swallow ejaculate | - |
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| disallow | (verb) command against | Synonyms: forbid, interdict, nix, prohibit, proscribe, veto |
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| escallop | (noun) edible marine bivalve having a fluted fan-shaped shell that swim by expelling water from the shell in a series of snapping motions | Synonyms: scallop, scollop |
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| (noun) edible muscle of mollusks having fan-shaped shells; served broiled or poached or in salads or cream sauces | Synonyms: scallop, scollop |
| (noun) thin slice of meat (especially veal) usually fried or broiled | Synonyms: cutlet, scallop, scollop |
| (verb) bake in a sauce, milk, etc., often with breadcrumbs on top | Synonyms: scallop |
| falloff | (noun) a noticeable deterioration in performance or quality | Synonyms: drop-off, falling off, slack, slump |
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| fallout | (noun) any adverse and unwanted secondary effect | Synonyms: side effect |
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| (noun) the radioactive particles that settle to the ground after a nuclear explosion | Synonyms: radioactive dust |
| fallow | (adjective) undeveloped but potentially useful | - |
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| (adjective) left unplowed and unseeded during a growing season | - |
| (noun) cultivated land that is not seeded for one or more growing seasons | - |
| gallon | (noun) United States liquid unit equal to 4 quarts or 3.785 liters | Synonyms: gal |
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| (noun) a British imperial capacity measure (liquid or dry) equal to 4 quarts or 4.545 liters | Synonyms: congius, Imperial gallon |
| gallop | (noun) a fast gait of a horse; a two-beat stride during which all four legs are off the ground simultaneously | - |
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| (verb) ride at a galloping pace | - |
| (verb) go at galloping speed | - |
| (verb) cause to move at full gallop | Synonyms: extend |
| gallous | (noun) alternative terms for gallows | Synonyms: gallows-tree, gallows tree, gibbet |
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| gallows | (noun) an instrument of execution consisting of a wooden frame from which a condemned person is executed by hanging | - |
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| halloo | (noun) a shout to attract attention | - |
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| (verb) shout `halloo', as when greeting someone or attracting attention | - |
| (verb) urge on with shouts | - |
| hallow | (verb) render holy by means of religious rites | Synonyms: bless, consecrate, sanctify |
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| hallowed | (adjective) worthy of religious veneration | Synonyms: sacred |
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| levallorphan | (noun) drug (trade name Lorfan) that is related to morphine but that counteracts the respiratory depression produced by morphine poisoning but without affecting its analgesic effects | Synonyms: Lorfan |
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| mallow | (noun) any of various plants of the family Malvaceae | - |
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| marshmallow | (noun) spongy confection made of gelatin and sugar and corn syrup and dusted with powdered sugar | - |
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| metalloid | (adjective) of or being a nonmetallic element that has some of the properties of metal | - |
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| pallone | (noun) an Italian game similar to tennis | - |
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| pallor | (noun) unnatural lack of color in the skin (as from bruising or sickness or emotional distress) | Synonyms: achromasia, lividity, lividness, luridness, paleness, pallidness, wanness |
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| phalloidin | (noun) one of a group of toxins from the death cap (Amanita phalloides) known as phallotoxins. | - |
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| phalloplasty | (noun) reconstructive surgery on the penis to repair congenital abnormality or injury | - |
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| pyrogallol | (noun) a toxic white lustrous crystalline phenol used to treat certain skin diseases and as a photographic developer | Synonyms: pyrogallic acid |
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| reallocate | (verb) allocate, distribute, or apportion anew | Synonyms: reapportion |
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| reallocation | (noun) a new apportionment (especially a new apportionment of congressional seats in the United States on the basis of census results) | Synonyms: reallotment, reapportionment |
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| (noun) a share that has been allocated again | - |
| reallot | (verb) allot again | - |
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| reallotment | (noun) a new apportionment (especially a new apportionment of congressional seats in the United States on the basis of census results) | Synonyms: reallocation, reapportionment |
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| sallow | (adjective) unhealthy looking | Synonyms: sickly |
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| (noun) any of several Old World shrubby broad-leaved willows having large catkins; some are important sources for tanbark and charcoal | - |
| (verb) cause to become sallow | - |
| sallowness | (noun) a sickly yellowish skin color | - |
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| scallop | (noun) edible marine bivalve having a fluted fan-shaped shell that swim by expelling water from the shell in a series of snapping motions | Synonyms: escallop, scollop |
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| (noun) edible muscle of mollusks having fan-shaped shells; served broiled or poached or in salads or cream sauces | Synonyms: escallop, scollop |
| (noun) thin slice of meat (especially veal) usually fried or broiled | Synonyms: cutlet, escallop, scollop |
| (noun) one of a series of rounded projections (or the notches between them) formed by curves along an edge (as the edge of a leaf or piece of cloth or the margin of a shell or a shriveled red blood cell observed in a hypertonic solution etc.) | Synonyms: crenation, crenature, crenel, crenelle |
| (verb) shape or cut in scallops | Synonyms: scollop |
| (verb) fish for scallops | Synonyms: scollop |
| (verb) form scallops in | Synonyms: scollop |
| (verb) decorate an edge with scallops | - |
| (verb) bake in a sauce, milk, etc., often with breadcrumbs on top | Synonyms: escallop |
| scalloped | (adjective) having a margin with rounded scallops | Synonyms: crenate, crenated |
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| scallopine | (noun) sauteed cutlets (usually veal or poultry) that have been pounded thin and coated with flour | Synonyms: scallopini |
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| scallopini | (noun) sauteed cutlets (usually veal or poultry) that have been pounded thin and coated with flour | Synonyms: scallopine |
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| shallon | (noun) small evergreen shrub of Pacific coast of North America having edible dark purple grape-sized berries | Synonyms: Gaultheria shallon, salal |
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| shallot | (noun) small mild-flavored onion-like or garlic-like clustered bulbs used for seasoning | - |
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| (noun) type of onion plant producing small clustered mild-flavored bulbs used as seasoning | Synonyms: Allium ascalonicum, Allium cepa aggregatum, eschalot, multiplier onion |
| (noun) aggregate bulb of the multiplier onion | - |