left brain

American  

noun

1. the cerebral hemisphere on the left side of the corpus callosum, controlling activity on the right side of the body: in humans, usually showing some degree of specialization for language and calculation.

---

left brain British  

noun

1. 1. the left hemisphere of the human brain, which is believed to control linear and analytical thinking, decision-making, and language

   2. ( as modifier )

      a left-brain activity

---

left brain Scientific  

/ lĕft /

1. The cerebral hemisphere located on the left side of the corpus callosum. The left brain controls activities on the right side of the body, and in humans, usually controls speech and language functions. The thought processes of logic and calculation are generally associated with the left brain.

---

left brain Cultural  

1. A popular term that describes the analytic, rational, and straight-line-thinking functions of the left half of the cerebral cortex. (Compare right brain; see brain.)

---

Example Sentences

Following a grievous injury or some other catastrophe, they were left brain dead—which is defined as lacking any brain function, including the ability to breathe on one’s own.

From Science Magazine

Those who have a stroke in their left brain hemisphere, which serves as the center of language processing in most people, are particularly vulnerable.

From Scientific American

“We need ideas, and the hard thing is getting out of the left brain,” Cleese says.

From Washington Post

A one-year-old boy who was left brain damaged when he was found face down in a bath can have his ventilator removed, a High Court judge ruled.

From BBC

"We're not trying to be completely logical or left brain about this, we want you to be moved on a kind of infrared, right brain level and not even know why you're moved."

From Salon