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left brain

left brain

5 4.4
Left half of the brain that controls the right body side and helps with language and thinking
  • noun
  • /lɛft breɪn/
translation icon : cerebro izquierdo
  • But, I've got to say I'm quite enjoying the challenge of using more of my left brain.
  • left brain and right brain

And I'd be in there and my left brain would be going stop, stop, stop.

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Examples

  • Schools with traditional curriculums appeal mostly to the capabilities of the left brain: verbal and logical learning.

    Academic text (1993)
  • Get some distance, gain inspiration, keep moving forward, and turn off your left brain.

    Blog text (11)
  • The left brain and the right brain.

  • People are either left brain or right brain dominant.

  • And for most of us, the left brain is stronger at processing language.

    Blog text (11)
  • Schools with traditional curriculums appeal mostly to the capabilities of the left brain: verbal and logical learning.

  • People are either left brain or right brain dominant, which affects their thinking style.

  • Those who excel at math and logic are often considered left brain dominant individuals.

Synonyms

left hemisphere
vsleft brain
  • Specialized
6 4.4

The left half of the brain that controls the right side of the body and helps language and logical thinking

is a more informal name used in everyday speech for the same concept

Surface Forms

left brain singular
left brains plural

Morphology

left + brain

The phrase 'left brain' is a straightforward compositional combination of 'left' (the left side) and 'brain' (the organ), so a B1 learner who knows both words will readily infer it refers to the left hemisphere of the brain. The additional popularly attributed functions (controls the right side of the body; logical/analytical bias) are conventional knowledge beyond the words themselves but do not make the term idiomatic or non-compositional.

Etymology

The name left brain comes from doctors' findings that damage to the left side of the brain often made people lose speech and affected the right side of the body. Because of that clear link, people came to see the left brain as the place for 'logic' and careful thinking, so today we use left brain to mean someone who is more 'logical' or analytical.