subgyren.
/ˈsʌbdʒʌɪə/, U.S. /ˈsəbdʒaɪ(ə)r/ 1. Anatomy. A gyrus partially or totally concealed by an overlying gyrus. Cf. subfissure n. 2. Now rare or disused.
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the world > life > the body > nervous system > cerebrospinal axis > brain > parts of brain > [noun] > fissure
anfractuosity1687
Sylvian fissure1828
sulcus1833
Rolando1839
valley1839
subfissure1889
subgyre1889
the world > life > the body > nervous system > cerebrospinal axis > brain > parts of brain > [noun] > cerebrum > hemisphere > convolutions and parts
circumvolution1578
convolution1615
crotchet1678
gyrus1842
subgyre1889
suboperculum1889
1889 A. H. Buck Ref. Handbk. Med. Sci. VIII. 160/1 Superfissures and subfissures. These terms are employed herein to designate the fissures which result from the formation of supergyres and subgyres.
1903 Amer. Anthropologist 5 623 The occipital fissure..shows a number of well-marked subgyres in its depths.
2. Oceanography. A smaller circular current within a gyre.
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the world > the earth > water > flow or flowing > current > [noun] > subsidiary
sidestream1715
back channel1744
subgyre1966
1966 Deep-sea Res. 16 606 This separation characteristically leads to recirculating eddies or subgyres in the basin.
1988 Science 24 June 1770/2 The configuration of the southwest Indian Ocean subgyre might lead to an occasional eastward leakage of water from the Agulhas current location at a position far upstream of its usual retroflection location.
2005 E. A. Norse & L. B. Crowder Marine Conservation Biol. viii. 125/1 The great ocean gyres and subgyres moving clockwise in the Northern Hemisphere and counterclockwise in the Southern Hemisphere carry masses of water..around and within the ocean basins.
This entry has been updated (OED Third Edition, June 2012; most recently modified version published online March 2022).
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n.1889