This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A nonconductor of electricity, especially a substance with electrical conductivity of less than a millionth (10-6) of a siemens.

n. An electrically insulating or nonconducting material considered for its electric susceptibility, i.e. its property of polarization when exposed to an external electric field.

adj. insulating

n. Any substance or medium that transmits the electric force by a process different from conduction, as in the phenomena of induction; a nonconductor, separating a body electrified by induction, from the electrifying body.

Transmitting electric effects without conduction; nonconducting.

n. A substance through or across which electric force is acting.

n. a material such as glass or porcelain with negligible electrical or thermal conductivity

"The Plasmocom team took a novel approach, developing what they called dielectric-loaded surface plasmon polariton waveguides (DLSPPW)."

stuff    material   

dielectric capacity    dielectric after-working   

bushing    glass wool    rock wool    mineral wool   

dielectricity    dielectric constant   

insulator   

ferromagnetic    particulate    homogeneous    vibrational    insulate    hyperfine    ultrathin    inhomogeneous    magnetic    multilayer