01 a. Not ponderable; without sensible or appreciable weight; incapable of being weighed.
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1.
Not ponderable; without sensible or appreciable weight; incapable of being weighed.
Entry
2 senses · 2 variants
Webster, 1913
Imponderable
02 n. An imponderable substance or body; specifically, in the plural, a name formerly applied to heat, light, electricity, and magnetism, regarde…
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1.
An imponderable substance or body; specifically, in the plural, a name formerly applied to heat, light, electricity, and magnetism, regarded as subtile fluids destitute of weight but in modern science little used.(Physics)