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oscillograph

os·cil·lo·graph [ ə síllə gràf ] (plural os·cil·lo·graphs)


noun 
Definition:
 
machine for recording variations: a device that produces a visual record of variations between two points or states, e.g. of electric current

[Late 19th century. < French oscillographe "that which swings while writing" < Latin oscillare "swing" (see oscillate)]

os·cil·lo·graph·ic [ ə sìllə gráffik ] adjective
os·cil·lo·graph·i·cal·ly [ ə sìllə gráffikəlee ] adverb
os·cil·log·ra·phy [ òssə lóggrəfee ] noun
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