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forebrain

American  
[fawr-brayn, fohr-] / ˈfɔrˌbreɪn, ˈfoʊr- /

noun

Anatomy.
  1. Also called prosencephalon. the anterior of the three primary divisions of the brain in the embryo of a vertebrate, or the part of the adult brain derived from this tissue including the diencephalon and telencephalon.

  2. the telencephalon.


forebrain British  
/ ˈfɔːˌbreɪn /

noun

  1. the nontechnical name for prosencephalon

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

forebrain Scientific  
/ fôr′brān′ /
  1. The forwardmost part of the vertebrate brain. In humans, it consists of the thalamus, the hypothalamus, and the cerebrum.

  2. Compare hindbrain midbrain


Etymology

Origin of forebrain

First recorded in 1875–80; fore- + brain


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Jokhai and Dundes found that the hindbrain does not emerge as a later branch of the developmental pathway that produces the forebrain and midbrain.

From Science Daily ● Sep. 21, 2026

The adult brain is divided into three major regions: the forebrain, midbrain and hindbrain.

From Science Daily ● Sep. 21, 2026

Previous studies in which birds were injected with dye showed their brains have one region in the forebrain to process touch to the face and head, and one for touch anywhere else on the body.

From Science Daily ● May 29, 2024

“In mammals, we know that touch is processed across the outer surface of the forebrain in the cortex,” said Duncan Leitch, corresponding author and a professor of integrative biology at UCLA.

From Science Daily ● May 29, 2024

The evagination to form the hypophysis, p, is seen against the floor of the forebrain, fb.

From Development of the Digestive Canal of the American Alligator by C. M. Reese

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