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Pronunciation varies by accent · noun
(very rare) A (hypothetical or fictional) machine on the femto scale; that is, a mechanical device whose size is on the order of the femtometer..
Femtomachines built from exotic nuclei had been employed as special-purpose computers ever since the basic design had been developed, six thousand years before.
Use femtomachine when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Femtomachine means (very rare) A (hypothetical or fictional) machine on the femto scale; that is, a mechanical device whose size is on the order of the femtometer..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Femtomachines built from exotic nuclei had been employed as special-purpose computers ever since the basic design had been developed, six thousand years before.
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