An alternative form of dynamometric; relating to the measurement of power or force with precision scientific instruments.
From dynamometric + -al suffix, creating a variant form that was more common in older scientific English (18th-19th centuries) but is now largely superseded by dynamometric.
Scientific writing of the Victorian era loved adding -al to adjectives—this word was how 1800s physicists said 'power-measuring,' and you still see it in historical physics journals.
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