optic lobe


: either of two prominences of the midbrain concerned with vision

Example Sentences

Recent Examples on the Web Locust brains are quite simple: on each side of the head is an optic lobe taking in information from the eyes and performing basic processing, and these lobes feed into the central midbrain, which carries out higher-level processing. Andrew Moseman, Discover Magazine, 26 May 2010 According to Science Alert, sleeping octopuses do this because neurons firing in their optic lobes cause their pigment-containing cells to become active. Fox News, 28 Sep. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'optic lobe.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1844, in the meaning defined above

Time Traveler
The first known use of optic lobe was in 1844

Dictionary Entries Near optic lobe

Cite this Entry

“Optic lobe.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/optic%20lobe. Accessed 4 Feb. 2023.

Kids Definition

optic lobe

: either of a pair of lobes in the midbrain that are concerned with vision

Medical Definition

optic lobe


More from Merriam-Webster on optic lobe

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