Definition of "pantograph" in 英语

noun

1. A mechanical linkage based on parallelograms causing two objects to move in parallel; notably as a drawing aid.

   • A pantograph can be adjusted to make either scaled or exact copies.

2. By extension, a structure of crosswise bars linked in such a way that it can extend and compress like an accordion, such as in a pantograph mirror or a scissor lift.

3. A pattern printed on a document to reduce the ease of photocopying.

   • I was impressed by the quality of the pantograph; I hadn't noticed it on the original, but the copies were covered in unpleasant lines.

4. (rail transport) A similarly-formed conductive device, now usually Z-shaped, that collects electric current from overhead lines for trains and trams.

verb

1. To engrave by means of a pantograph (parallel linkage) system.