subfissuren.
/ˌsʌbˈfɪʃə/, U.S. /ˈˌsəbˈˌfɪʃər/ 1. A secondary or minor fissure (in various senses).
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1862 R. Mallett Great Neapolitan Earthquake I. 63 The central fissures, being secondary or sub-fissures, dependent upon the bowing [of a wall].
1886 J. Cantlie Text-bk. Naked-eye Anat. (ed. 3) 364 Two fissures divide the cord first into two equal portions, and sub-fissures apportion either side into columns.
1979 Mass. Rev. 20 68 He had never been invited to the village..but he knew exactly where it was—hidden cleverly in a sub-fissure of the mountain.
2007 E. Daly & J. Sarkin Reconciliation in Divided Societies ix. 250 Attention should also be given to the subfissures within a society—those conflicts that may not yet have boiled over but are nonetheless simmering.
2. Anatomy. Originally: a fissure (sulcus) of the cerebral cortex which is wholly or partly concealed by an overlying convolution of the cerebral cortex. Later also: a subdivision of a sulcus. Cf. subgyre n. 1. Now rare.
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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
1889 B. G. Wilder in A. H. Buck Ref. Handbk. Med. Sci. VIII. 160/1 Normal, human subfissures are..the transinsular and others crossing the surface of the insula.
1900 Philos. Trans. (Royal Soc.) B. 193 198 The special lamination extends above to the parallel cuneal sulcus, and below to the subfissure of the collateral sulcus.
1915 Brain 38 470 (caption) It is thus incidentally evident..that 1 is in this figure placed not above the calcarine stem, but above a small sub-fissure considerably above it.
This entry has been updated (OED Third Edition, June 2012; most recently modified version published online March 2022).
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n.1862