innerbrain

innerbrain noun: structures located deep within the brain, particularly those involved in emotions and memory.

Noun

innerbrain (countable and uncountable, plural innerbrains)

(informal) Structures located deep within the brain, particularly those involved in emotions and memory.
- It can grow and build into something really frightening, and when it does build up to the point where innerbrain mix-up becomes a habit, nervous breakdown begins.1964, Mary Asia Hilf, Barbara Bourns, No Time for Tears, page 262
- When inhaled, amyl nitrite triggers an almost immediate acceleration in heart rate and drop in blood pressure while at the same time shutting off oxygen to the innerbrain.1991, Bulletin, page 22

When people of a different race were seen, the amygdala — which is an innerbrain limbic-system structure that governs fear and anger — became more active.2009, Everett L. Worthington Jr., A Just Forgiveness:
I ask that because, as I stated in chapter 10, the Buddhists call the innerbrain the "phallus."2020, C. S. Warner, The Mystical Marriage:

From inner + brain.

What does innerbrain mean?: Innerbrain means structures located deep within the brain, particularly those involved in emotions and memory.
How do you use innerbrain in a sentence?: When people of a different race were seen, the amygdala — which is an innerbrain limbic-system structure that governs fear and anger — became more active.
What part of speech is innerbrain?: Innerbrain is a noun.
What is the plural of innerbrain?: The plural of innerbrain is innerbrains.

Adapted from Wiktionary: innerbrain (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated: 2026-09-02

Cite this entry: “innerbrain.” Word.ws, https://word.ws/innerbrain. Based on Wiktionary, CC BY-SA 4.0.