brain

Overview

Meaning Now

• The organ of soft nervous tissue contained in the skull of vertebrates, functioning as the coordinating center of sensation and intellectual and nervous activity.
• Mental capacity, intelligence, or intellect.

Journey

The word stems from a Proto-Indo-European root related to moisture or softness, reflecting the anatomical consistency of the brain. It replaced the older Germanic term *hirni- (cognate with modern German 'Hirn') in West Germanic languages, though 'hirn' remains common in other Germanic branches.

Evolution

1. Proto-Indo-European

   *mregʰ-

   “to moisten, drizzle; brain (as the moist part of the head)”

2. Proto-Germanic

   *bragną

   “brain”

3. Old English

   brægen

   “brain”

4. Middle English

   brayn

   “brain”

Connections

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