Imponderable
Pronunciation : Im*pon"der*a*ble
Part of Speech : a.
Etymology : [Pref. im- not + ponderable: cf. F. impond?rable.]
Definition : Defn: Not ponderable; without sensible or appreciable weight; incapable of being weighed.
Source : Webster's Unabridged Dictionary, 1913
Pronunciation : Im*pon"der*a*ble
Part of Speech : n.
Definition : Defn: An imponderable substance or body; specifically, in the plural, a name formely applied to heat, light, electricity, and magnetism, regarded as subtile flyids destitute of weight but in modern science little used.
(Physics)
Source : Webster's Unabridged Dictionary, 1913