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Appalachian Trail
appall
appalled
appalling
Appaloosa
appanage
apparat
apparatchik
apparatus
apparel
apparent
apparent horizon
apparent low bidder
apparent magnitude
apparent wind
apparently
apparition
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apparatus

ap·pa·ra·tus [ àppə ráttəss, àppə ráytəss ] (plural ap·pa·ra·tus·es or ap·pa·ra·tus)


noun 
Definition:
 
1. equipment: a piece of machinery, a tool, or a device used for a specific purpose
breathing apparatus

2. system allowing something to function: the system or structure in which a process occurs or an organization functions
a complex bureaucratic apparatus

3. anatomy system of organs: a group or system of organs that work together to perform a specific function

[Early 17th century. < Latin, past participle of apparare "prepare" < parare "prepare"]
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