To test a software component by running it on randomly generated input.
To fly off in minute particles with a fizzing sound, like water from hot metal.
Origin
Uncertain. Some dictionaries suggest a Germanic source; compare Low German fussig, Dutch voos. Others, such as Webster's New College Dictionary, suggest a . The Oxford English Dictionary suggests, "Perhaps imitative of the action of blowing away light particles."
Unknown. Godfrey Irwin (1930) suggests a possible connection to fuss, "over-particular", excessive bother.
Modern English dictionary
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