English Dictionary

GYRUS (gyri)

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Irregular inflected form: gyri  Listen to US pronunciation  Listen to GB pronunciation

 Dictionary entry overview: What does gyrus mean? 

GYRUS (noun)
  The noun GYRUS has 1 sense:

1. a convex fold or elevation in the surface of the brainplay

  Familiarity information: GYRUS used as a noun is very rare.


 Dictionary entry details 


GYRUS (noun)


Sense 1

Meaning:

A convex fold or elevation in the surface of the brain

Classified under:

Nouns denoting body parts

Synonyms:

convolution; gyrus

Hypernyms ("gyrus" is a kind of...):

anatomical structure; bodily structure; body structure; complex body part; structure (a particular complex anatomical part of a living thing and its construction and arrangement)

Hyponyms (each of the following is a kind of "gyrus"):

frontal gyrus (any of the convolutions of the outer surface of the frontal lobe of the cerebrum)

temporal gyrus (any of the convolutions of the outer surface of the temporal lobe of the cerebrum)

parietal gyrus (any of the convolutions of the outer surface of the parietal lobe of the cerebrum)

occipital gyrus (any of the convolutions of the outer surface of the occipital lobe of the cerebrum)

central gyrus (either of two gyri on either side of the central sulcus)

Holonyms ("gyrus" is a part of...):

cerebrum (anterior portion of the brain consisting of two hemispheres; dominant part of the brain in humans)


 Context examples 


A gyrus or ridge in the occipital lobe of the brain below the middle occipital sulcus.

(Inferior Occipital Convolution, NCI Thesaurus)

The short gyri in the anterior insula.

(Gyri Breves Insulae, NCI Thesaurus)

The longer gyri in the posterior insula.

(Gyrus Longus Insulae, NCI Thesaurus)

A gyrus or ridge on the outer surface of the temporal lobe below the middle sulcus.

(Inferior Temporal Gyrus, NCI Thesaurus)

A horizontal groove on the lateral surface of the occipital lobe extending from the accessory lateral occipital sulci to the lunate sulcus that separates the superior occipital gyrus from the inferior occipital gyrus.

(Lateral-Occipital Sulcus, NCI Thesaurus)

A gyrus or ridge on the outer surface of the temporal lobe between the superior and middle temporal sulci.

(Middle Temporal Gyrus, NCI Thesaurus)

A gyrus or ridge in the occipital lobe of the brain between the superior and middle occipital sulci.

(Middle Occipital Convolution, NCI Thesaurus)

This area is small, contains pyramidal cells, and does not contain mossy fiber connections from the dentate gyrus.

(CA2 Field of the Cornu Ammonis, NCI Thesaurus)

A shallow groove dividing the dentate gyrus from the hippocampal CA1 field and the subiculum.

(Hippocampal Sulcus, NCI Thesaurus)

It results in brain malformation characterized by the underdevelopment or absence of gyri or ridges in the cerebral cortex.

(Classical Lissencephaly, NCI Thesaurus)



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