American Heritage® Dictionary of the English Language, Fourth Edition
- n. The large rounded structure of the brain occupying most of the cranial cavity, divided into two cerebral hemispheres that are joined at the bottom by the corpus callosum. It controls and integrates motor, sensory, and higher mental functions, such as thought, reason, emotion, and memory.
Century Dictionary and Cyclopedia
- n. The entire brain; the encephalon.
- n. That portion of the brain which lies in front of the cerebellum and pons Varolii. This is the ordinary meaning of the term in human anatomy, the cerebrum in this use comprising the prosencephalon or cerebral hemispheres and the olfactory lobes, the thalamencephalon or optic thalami and other parts about the third ventricle, and the mesencephalon, consisting of the corpora quadrigemina above and the crura cerebri below. See cuts under brain, corpus, and cerebral.
- n. The two cerebral hemispheres taken together, with the olfactory lobes; the prosencephalon. See cerebral hemisphere, under cerebral.
- n. In insects, the supra-esophageal ganglion, formed by the union of several ganglia in the upper part of the head, and often called the brain.
- n. In invertebrates generally, the principal nervous ganglion or ganglia of the head.
- n. neuroanatomy The upper part of the brain, which is divided into the two cerebral hemispheres. In humans it is the largest part of the brain and is the seat of motor and sensory functions, and the higher mental functions such as consciousness, thought, reason, emotion, and memory.
GNU Webster's 1913
- n. (Anat.) The anterior, and in man the larger, division of the brain; the seat of the reasoning faculties and the will. See brain.
- n. anterior portion of the brain consisting of two hemispheres; dominant part of the brain in humans
- From Latin cerebrum ("brain, skull"), from Proto-Indo-European *ḱara-, *ḱeras-, *ḱrās- (“head”). Cognate with Ancient Greek κάρα (kára, "head"), Old High German hirni ("brain"), Old English hærn ("brain"). More at harns. (Wiktionary)
- Latin, brain; see ker-1 in Indo-European roots. (American Heritage® Dictionary of the English Language, Fourth Edition)
“The cerebrum is made up of two halves, the hemispheres, which are structurally identical.”
“In describing the central nervous system in detail, then, let us begin with the cerebrum, which is almost divided, longitudinally, into right and left halves, each of which is called a cerebral hemisphere.”
“The portion of the forebrain that lies behind the cerebrum is the thalamus (thaVuh-mus). "”
“Attached to the brain stem, behind and above, and lying immediately below the rear overhang of the cerebrum is the cerebellum (see p. 145).”
“First, there is the greater or upper brain, called the cerebrum; secondly, there is the lower or smaller brain, called the cerebellum.”
“The cerebrum is the center of intelligence and thought.”
“The cerebrum is the chief seat of the sensations, the intellect, the will, and the emotions.”
“The cerebrum is a double organ, consisting of two similar divisions, called the _cerebral hemispheres_.”
“The cerebrum is the part of the nervous system upon which our varied experiences leave their impressions and through which these impressions are made to influence the movements of the body.”
“Anatomically the cerebrum is a complex elaboration of cells and fibers that have these main purposes: First, to record in perfect and detailed fashion the experiences of the organism, so that here are memory centers for visual and auditory experiences, for skin, joint and bone experiences of all kinds, speech memories, action memories, and undoubtedly for the recording in some way not understood of the pleasure-pain feelings.”
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