pencil beam

noun

: a sharp-focus radar beam nearly round in its axis used to pick up an intruder located by a search radar beam and give it better definition on the radar screen

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Cite this Entry

“Pencil beam.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pencil%20beam. Accessed 24 Jul. 2024.

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