| cartridge | (noun) ammunition consisting of a cylindrical casing containing an explosive charge and a bullet; fired from a rifle or handgun | - |
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| (noun) an electro-acoustic transducer that is the part of the arm of a record player that holds the needle and that is removable | Synonyms: pickup |
| (noun) a module designed to be inserted into a larger piece of equipment | - |
| (noun) a light-tight supply chamber holding the film and supplying it for exposure as required | Synonyms: magazine |
| clostridia | (noun) spindle-shaped bacterial cell especially one swollen at the center by an endospore | Synonyms: clostridium |
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| clostridium | (noun) spindle-shaped bacterial cell especially one swollen at the center by an endospore | Synonyms: clostridia |
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| geometrid | (noun) slender-bodied broad-winged moth whose larvae are called measuring worms | Synonyms: geometrid moth |
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| nightrider | (noun) member of a secret mounted band in United States South after the American Civil War; committed acts of intimidation and revenge | Synonyms: night rider |
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| nitride | (noun) a compound containing nitrogen and a more electropositive element (such as phosphorus or a metal) | - |
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| outrider | (noun) an escort who rides ahead (as a member of the vanguard) | - |
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| partridge | (noun) small Old World gallinaceous game birds | - |
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| (noun) a popular North American game bird; named for its call | Synonyms: bobwhite, bobwhite quail |
| (noun) valued as a game bird in eastern United States and Canada | Synonyms: Bonasa umbellus, ruffed grouse |
| (noun) heavy-bodied small-winged South American game bird resembling a gallinaceous bird but related to the ratite birds | Synonyms: tinamou |
| (noun) flesh of either quail or grouse | - |
| partridgeberry | (noun) creeping woody plant of eastern North America with shiny evergreen leaves and scarlet berries | Synonyms: boxberry, Mitchella repens, twinberry |
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| putridity | (noun) the state of being putrid | - |
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| putridness | (noun) in a state of progressive putrefaction | Synonyms: corruption, putrescence, rottenness |
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| stride | (noun) a step in walking or running | Synonyms: pace, tread |
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| (noun) significant progress (especially in the phrase `make strides') | - |
| (noun) the distance covered by a step | Synonyms: footstep, pace, step |
| stridence | (noun) having the timbre of a loud high-pitched sound | Synonyms: shrillness, stridency |
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| stridency | (noun) having the timbre of a loud high-pitched sound | Synonyms: shrillness, stridence |
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| strider | (noun) a person who walks rapidly with long steps | - |
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| stridor | (noun) a whistling sound when breathing (usually heard on inspiration); indicates obstruction of the trachea or larynx | - |
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| stridulation | (noun) a shrill grating or chirping noise made by some insects by rubbing body parts together | - |
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| trident | (noun) a spear with three prongs | - |
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| tridymite | (noun) a mineral form of silica | - |
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