nonmetallic

Lacks metallic properties

Nonmetallic describes substances that lack the properties of metals—they don't conduct heat or electricity well, aren't shiny or malleable, and can't be drawn into wire.

In chemistry, nonmetallic elements occupy the upper right of the periodic table: oxygen, nitrogen, carbon, sulfur.

The nonmetallic casing won't interfere with the signal.

insulating

rubber

Elastic polymer from trees

plasticCapable of being molded
ceramicFired clay material
glassTransparent solid from sand

wood · porcelain · mica · resin · bakelite · polystyrene · polyethylene · PVC · silicone · nylon

chemical

hydrogen

Simplest atomic element

oxygenElement eight, colorless gas
nitrogenElement seven, colorless gas
carbonSixth element, atomic symbol C

sulfur · phosphorus · chlorine · fluorine · iodine · bromine · selenium · arsenic · boron · silicon

brittle

fragile

Easily broken or damaged

shatterFragment violently, suddenly
crackNarrow break or attempt
fractureSplit in hard material

breakable · delicate · friable · crumbly · chippy · snappable · splinter · crystalline · glassy · ceramic

luster

matte

Non-reflective surface finish

dullLacking edge or interest
lusterlessDevoid of sheen
unpolishedLacking finish or refinement

flat · opaque · subdued · unshiny · nonreflective · satin · eggshell · chalky · earthy · muted

nonmetallic

rubber

hydrogen

fragile

matte

nonmetallic

Opposites

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