JMdict: 2408540

脳内 【のうない】

  1. [adj-no,n] intracerebral; inside the brain
  2. [adj-no,n] (occurring) in the mind; mental (e.g. image); imaginary; figmental
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
Brain, Memory ノウ, ドウ のうずる
Inside, Within, Between, Among, House, Home ナイ, ダイ うち

Words often seen with this one: (experimental feature)

こと (15),  (14)