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| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question. |
| coaxial cable | |
| —n | |
| Often shortened to: coax a cable consisting of an inner insulated core of stranded or solid wire surrounded by an outer insulated flexible wire braid, used esp as a transmission line for radio-frequency signals | |
coaxial cable (kō-āk'sē-əl) Pronunciation Key
(click for larger image in new window) A cable consisting of an electrically conductive wire surrounded by a layer of insulating material, a layer of shielding material, and an outer layer of insulating material, usually plastic or rubber. The purpose of the shielding layer is to reduce external electrical interference. Coaxial cables are used for transmission of high-frequency audio, video, computer network and other signals. |