| NOUN | artifact | cross hair, cross wire | either of two fine mutually perpendicular lines that cross in the focus plane of an optical instrument and are use for sighting or calibration |
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| Meaning | Either of two fine mutually perpendicular lines that cross in the focus plane of an optical instrument and are use for sighting or calibration. | |
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| Example | "he had the target in his cross hairs" | |
| Synonym | cross wire | |
| Part of | reticle, reticule, graticule | A network of fine lines, dots, cross hairs, or wires in the focal plane of the eyepiece of an optical instrument |
| Broader | line | A mark that is long relative to its width |
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