Topic: OPTICS
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| Date: | 1500-1600 |
| Language: | Late Latin |
| Origin: | prisma, from Greek, 'something cut with a saw'; because of its shape |
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pris‧m
[countable]
[countable]1HPO a transparent block of glass that breaks up white light into different colours
2 technicalHPO a solid object with matching ends and several sides which are the same width all the way up
