1
: a network of anastomosing or interlacing blood vessels or nerves
2
: an interwoven combination of parts or elements in a structure or system

Examples of plexus in a Sentence

Recent Examples on the Web
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It is primarily produced by a network of cells called the choroid plexus, which is located in the brain’s ventricles or cavities. Danielle Wilhour, Discover Magazine, 15 Aug. 2024 Increasing your caffeine consumption to an equivalent of three to four cups of coffee per day can also help by increasing CSF production through stimulating the choroid plexus. Danielle Wilhour, The Conversation, 14 Aug. 2024

Word History

Etymology

New Latin, from Latin plectere to braid — more at ply

First Known Use

1666, in the meaning defined at sense 1

Time Traveler
The first known use of plexus was in 1666

Browse Nearby Words

Cite this Entry

“Plexus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/plexus. Accessed 17 Apr. 2025.

Kids Definition

plural plexuses
: a network especially of blood vessels or nerves

Medical Definition

plural plexuses
: a network of anastomosing or interlacing blood vessels or nerves

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