Noun
- plural form of light pen
light-pens
English Wiktionary. Available under CC-BY-SA license.
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"light-pens." YourDictionary, n.d. Web. 06 December 2018. <https://www.yourdictionary.com/light-pens>.
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light-pens. (n.d.). Retrieved December 06th, 2018, from https://www.yourdictionary.com/light-pens
