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| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
| incandescent lamp | |
| —n | |
| a source of light that contains a heated solid, such as an electrically heated filament | |
incandescent lamp (ĭn'kən-děs'ənt) Pronunciation Key
(click for larger image in new window) A lamp that produces light by heating up a filament of wire inside a bulb with an electric current, causing incandescence. The glass bulb containing the filament is filled with a nonreactive gas, such as argon, to prevent the wire from burning. Compare fluorescent lamp. |