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oper·​cu·​lar ō-ˈpər-kyə-lər How to pronounce opercular (audio)
: of, relating to, or constituting an operculum


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: an opercular part (such as a bone or scale)

Examples of opercular in a Sentence

Recent Examples on the Web
The electroencephalographic laser-evoked potentials (LEPs) were modelled using six equivalent source dipoles located in the left and right fronto-opercular/anterior-insular cortex, left parietal operculum, left primary somatosensory cortex, medial parietal cortex and left medial temporal cortex. Ncbi Rofl, Discover Magazine, 26 Sep. 2012 In the left fronto-opercular/anterior-insular cortex, negative sounds failed to show the positive potential component at around 260 ms that was observed during positive and especially during neutral sounds. Ncbi Rofl, Discover Magazine, 26 Sep. 2012 Some people consider the salience network to be the same as another network, called the cingulo-opercular network — the new Neuron paper, for example, refers to them interchangeably. Quanta Magazine, 5 Dec. 2013

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'opercular.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History



borrowed from New Latin operculāris, from operculum operculum + Latin -āris -ar

First Known Use


1830, in the meaning defined above


1841, in the meaning defined above

Time Traveler
The first known use of opercular was in 1830

Dictionary Entries Near opercular

Cite this Entry

“Opercular.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/opercular. Accessed 16 Jul. 2024.

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