silicon | (noun) a tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistors | Synonyms: atomic number 14, Si |
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silicone | (noun) any of a large class of siloxanes that are unusually stable over a wide range of temperatures; used in lubricants and adhesives and coatings and synthetic rubber and electrical insulation | Synonyms: silicone polymer |
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silicosis | (noun) a lung disease caused by inhaling particles of silica or quartz or slate | - |
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siliqua | (noun) narrow elongated seed capsule peculiar to the family Cruciferae | Synonyms: silique |
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silique | (noun) narrow elongated seed capsule peculiar to the family Cruciferae | Synonyms: siliqua |
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silk | (noun) a fabric made from the fine threads produced by certain insect larvae | - |
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(noun) animal fibers produced by silkworms and other larvae that spin cocoons and by most spiders | - |
silken | (adjective) having a smooth, gleaming surface reflecting light; being of a smooth, soft and lustrous quality, resembling silk | Synonyms: satiny, silklike, silky, sleek, slick |
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silkgrass | (noun) valuable forage grass of dry upland areas and plains of western North America to northern Mexico | Synonyms: Indian millet, mountain rice, Oryzopsis hymenoides, silk grass |
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silkily | (adverb) in a silky manner | - |
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silkiness | (noun) the smooth feel of silk fabric | Synonyms: sleekness |
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silklike | (adjective) having a smooth, gleaming surface reflecting light; being of a smooth, soft and lustrous quality, resembling silk | Synonyms: satiny, silken, silky, sleek, slick |
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silks | (noun) the brightly colored garments of a jockey; emblematic of the stable | - |
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silkscreen | (noun) a print made using a stencil process in which an image or design is superimposed on a very fine mesh screen and printing ink is squeegeed onto the printing surface through the area of the screen that is not covered by the stencil | Synonyms: serigraph, silk screen print |
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(verb) print by silkscreen | - |
silkweed | (noun) any of numerous plants of the genus Asclepias having milky juice and pods that split open releasing seeds with downy tufts | Synonyms: milkweed |
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silkwood | (noun) a fast-growing tropical American evergreen having white flowers and fleshy edible fruit; a bark yields a silky fiber used in cordage and wood is valuable for staves | Synonyms: calabur tree, calabura, Jamaican cherry, Muntingia calabura, silk wood |
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silkworm | (noun) the commercially bred hairless white caterpillar of the domestic silkworm moth which spins a cocoon that can be processed to yield silk fiber; the principal source of commercial silk | - |
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(noun) larva of a saturniid moth; spins a large amount of strong silk in constructing its cocoon | Synonyms: giant silkworm, wild wilkworm |
silky | (adjective) having a smooth, gleaming surface reflecting light; being of a smooth, soft and lustrous quality, resembling silk | Synonyms: satiny, silken, silklike, sleek, slick |
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sill | (noun) structural member consisting of a continuous horizontal timber forming the lowest member of a framework or supporting structure | - |
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(noun) (geology) a flat (usually horizontal) mass of igneous rock between two layers of older sedimentary rock | - |
sillabub | (noun) sweetened cream beaten with wine or liquor | Synonyms: syllabub |
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(noun) spiced hot milk with rum or wine | Synonyms: syllabub |
silliness | (noun) a ludicrous folly | Synonyms: absurdity, fatuity, fatuousness |
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(noun) an impulsive scatterbrained manner | Synonyms: giddiness |
silly | (adjective) dazed from or as if from repeated blows | Synonyms: punch-drunk, slaphappy |
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(adjective) ludicrous, foolish | Synonyms: goofy, wacky, whacky, zany |
(adjective) lacking seriousness; given to frivolity | Synonyms: airheaded, dizzy, empty-headed, featherbrained, giddy, light-headed, lightheaded |
(adjective) inspiring scornful pity | Synonyms: pathetic, ridiculous |
(noun) a word used for misbehaving children | - |
silo | (noun) a cylindrical tower used for storing silage | - |
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(noun) military installation consisting of an underground structure where ballistic missiles can be stored and fired | - |
siloxane | (noun) any of a large class of compounds that have alternate silicon and oxygen atoms | - |
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silt | (noun) mud or clay or small rocks deposited by a river or lake | - |
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(verb) become chocked with silt | Synonyms: silt up |
siltstone | (noun) a fine-grained sandstone of consolidated silt | - |
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silty | (adjective) full of silt | - |
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silurid | (noun) Old World freshwater catfishes having naked skin and a long anal fin more or less merged with the eellike caudal fin | Synonyms: silurid fish |
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silva | (noun) the forest trees growing in a country or region | Synonyms: sylva |
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silvan | (adjective) relating to or characteristic of wooded regions | Synonyms: sylvan |
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(noun) a spirit that lives in or frequents the woods | Synonyms: sylvan |
silver | (adjective) of lustrous grey; covered with or tinged with the color of silver | Synonyms: argent, silverish, silvery |
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(adjective) expressing yourself readily, clearly, effectively | Synonyms: eloquent, facile, fluent, silver-tongued, smooth-spoken |
(adjective) having the white lustrous sheen of silver | Synonyms: silvern, silvery |
(adjective) made from or largely consisting of silver | - |
(noun) silverware eating utensils | Synonyms: flatware |
(noun) a trophy made of silver (or having the appearance of silver) that is usually awarded for winning second place in a competition | Synonyms: silver medal |
(noun) a light shade of grey | Synonyms: ash gray, ash grey, silver gray, silver grey |
(noun) coins made of silver | - |
(noun) a soft white precious univalent metallic element having the highest electrical and thermal conductivity of any metal; occurs in argentite and in free form; used in coins and jewelry and tableware and photography | Synonyms: Ag, atomic number 47 |
(verb) make silver in color | - |
(verb) turn silver | - |
(verb) coat with a layer of silver or a silver amalgam | - |
silverback | (noun) an adult male gorilla with grey hairs across the back | - |
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silverberry | (noun) deciduous unarmed North American shrub with silvery leaves and fruits | Synonyms: Elaeagnus commutata, silver-bush, silver berry, silverbush |
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silverbush | (noun) deciduous unarmed North American shrub with silvery leaves and fruits | Synonyms: Elaeagnus commutata, silver-bush, silver berry, silverberry |
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(noun) silvery hairy European shrub with evergreen foliage and pale yellow flowers | Synonyms: Anthyllis barba-jovis, Jupiter's beard, silver-bush |
silverfish | (noun) a silvery variety of Carassius auratus | - |
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(noun) silver-grey wingless insect found in houses feeding on book bindings and starched clothing | Synonyms: Lepisma saccharina |
silverish | (adjective) of lustrous grey; covered with or tinged with the color of silver | Synonyms: argent, silver, silvery |
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silvern | (adjective) having the white lustrous sheen of silver | Synonyms: silver, silvery |
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(adjective) resembling or reminiscent of silver | Synonyms: silvery |
silverplate | (verb) plate with silver | Synonyms: silver-plate |
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silverpoint | (noun) a drawing made on specially prepared paper with an instrument having a silver tip (15th and 16th centuries) | - |
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silverrod | (noun) plant of eastern North America having creamy white flowers | Synonyms: Solidago bicolor |
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silverside | (noun) small fishes having a silver stripe along each side; abundant along the Atlantic coast of the United States | Synonyms: silversides |
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silversides | (noun) small fishes having a silver stripe along each side; abundant along the Atlantic coast of the United States | Synonyms: silverside |
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(noun) the common North American shiner | Synonyms: common shiner, Notropis cornutus |
silversmith | (noun) someone who makes or repairs articles of silver | Synonyms: silver-worker, silverworker |
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silverspot | (noun) butterfly with silver spots on the underside of the hind wings | - |
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silversword | (noun) low-growing plant found only in volcanic craters on Hawaii having rosettes of narrow pointed silver-green leaves and clusters of profuse red-purple flowers on a tall stem | Synonyms: Argyroxiphium sandwicense |
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silvertip | (noun) powerful brownish-yellow bear of the uplands of western North America | Synonyms: grizzly, grizzly bear, silver-tip, Ursus arctos horribilis, Ursus horribilis |
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silvervine | (noun) ornamental vine of eastern Asia having yellow edible fruit and leaves with silver-white markings | Synonyms: Actinidia polygama, silver vine |
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silverware | (noun) tableware made of silver or silver plate or pewter or stainless steel | - |
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silverweed | (noun) any of various twining shrubs of the genus Argyreia having silvery leaves and showy purple flowers | - |
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(noun) low-growing perennial having leaves silvery beneath; northern United States, Europe, Asia | Synonyms: goose-tansy, goose grass, Potentilla anserina |
silverwork | (noun) decorative work made of silver | - |
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silverworker | (noun) someone who makes or repairs articles of silver | Synonyms: silver-worker, silversmith |
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silvery | (adjective) of lustrous grey; covered with or tinged with the color of silver | Synonyms: argent, silver, silverish |
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(adjective) having the white lustrous sheen of silver | Synonyms: silver, silvern |
(adjective) resembling or reminiscent of silver | Synonyms: silvern |
silvex | (noun) a herbicide that is effective in controlling woody plants but is toxic to animals | - |
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silviculture | (noun) the branch of forestry dealing with the development and care of forests | - |
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tensile | (adjective) of or relating to tension | - |
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(adjective) capable of being shaped or bent or drawn out | Synonyms: ductile, malleable, pliable, pliant, tractile |
tonsil | (noun) either of two masses of lymphatic tissue one on each side of the oral pharynx | Synonyms: faucial tonsil, palatine tonsil, tonsilla |
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tonsilla | (noun) either of two masses of lymphatic tissue one on each side of the oral pharynx | Synonyms: faucial tonsil, palatine tonsil, tonsil |
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tonsillectomy | (noun) surgical removal of the palatine tonsils; commonly performed along with adenoidectomy | - |
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tonsillitis | (noun) inflammation of the tonsils (especially the palatine tonsils) | - |
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uneasily | (adverb) with anxiety or apprehension | Synonyms: anxiously, apprehensively |
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unsilenced | (adjective) not silenced | - |
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upsilon | (noun) the 20th letter of the Greek alphabet | - |
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utensil | (noun) an implement for practical use (especially in a household) | - |
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windowsill | (noun) the sill of a window; the horizontal member at the bottom of the window frame | - |
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