perforantadj.

Brit.

/ˈpəːf(ə)rənt/,

/ˈpəːf(ə)rn̩t/, U.S.

/ˈpərf(ə)rənt/

Origin: Either (i) a borrowing from Latin. Or (ii) a borrowing from French. Etymons: Latin perforant-, perforāns; French perforant.

Etymology: Either < classical Latin perforant-, perforāns, present participle of perforāre perforate v., or < French perforant (1752), use as adjective of present participle of perforer perforate v. Compare Italian perforante (a1704). Compare earlier perforating adj.

Chiefly Anatomy.

Perforating; spec. (Anatomy) designating blood vessels that perforate other structures.

ΘΚΠ

the world > space > relative position > condition of being open or not closed > making holes or becoming holed > [adjective] > of or relating to perforation > perforating

perforative1598

perforant1761

perforating1895

1761 C. Hervey Let. 2 June (1785) III. xxi. 223 A wound in her throat..done by an instrument incident and perforant.

1850 E. B. Browning tr. Æschylus Prometheus Bound (rev. ed.) in Poems (new ed.) I. 143 Heavily now Let fall the strokes upon the perforant gyves!

1934 Amer. Jrnl. Surg 26 292/2 This vessel sends seven perforant branches (external mammary) to the first seven intercostal.

1956 Amer. Jrnl. Surg. 91 396/2 The valves of the veins are destroyed, and the lumens of the femoral and perforant veins become partially obstructed.

1999 Clin. Neurol. & Neurosurg. 101 198 Central diabetes insipidus following hypothalamic infarction or other lesions is well know as thalamus and hypothalamus ar supplied by perforant arteries from the posterior cerebral artery.

Compounds

perforant path n. (also perforant pathway) Anatomy a tract of nerve fibres leading from lateral entorhinal area (the most posterior part of the pyriform lobe) to the hippocampus.

ΚΠ

1947 Brain 70 189 The fibres from the lateral parts of the entorhinal area, however, pass as the so-called ‘perforant path’ to all sectors.

1967 Science 1 Sept. 1072/3 It is probable that olfactory impulses are relayed in part by the perforant pathway from the hippocampal gyrus.

1983 Brain Res. Bull. 10 699 Sustained electrical stimulation of the perforant path evokes granule cell population spikes and epileptiform discharges.

2000 Proc. National Acad. Sci. U.S.A. 97 14734/1 Here, the perforant pathway was stimulated, and field potentials were recorded from the granule cell layer of the dentate gyrus.

This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).

单词	perforant
释义	perforantadj. Brit. /ˈpəːf(ə)rənt/, /ˈpəːf(ə)rn̩t/, U.S. /ˈpərf(ə)rənt/ Origin: Either (i) a borrowing from Latin. Or (ii) a borrowing from French. Etymons: Latin perforant-, perforāns; French perforant. Etymology: Either < classical Latin perforant-, perforāns, present participle of perforāre perforate v., or < French perforant (1752), use as adjective of present participle of perforer perforate v. Compare Italian perforante (a1704). Compare earlier perforating adj. Chiefly Anatomy. Perforating; spec. (Anatomy) designating blood vessels that perforate other structures. ΘΚΠ the world > space > relative position > condition of being open or not closed > making holes or becoming holed > [adjective] > of or relating to perforation > perforating perforative1598 perforant1761 perforating1895 1761 C. Hervey Let. 2 June (1785) III. xxi. 223 A wound in her throat..done by an instrument incident and perforant. 1850 E. B. Browning tr. Æschylus Prometheus Bound (rev. ed.) in Poems (new ed.) I. 143 Heavily now Let fall the strokes upon the perforant gyves! 1934 Amer. Jrnl. Surg 26 292/2 This vessel sends seven perforant branches (external mammary) to the first seven intercostal. 1956 Amer. Jrnl. Surg. 91 396/2 The valves of the veins are destroyed, and the lumens of the femoral and perforant veins become partially obstructed. 1999 Clin. Neurol. & Neurosurg. 101 198 Central diabetes insipidus following hypothalamic infarction or other lesions is well know as thalamus and hypothalamus ar supplied by perforant arteries from the posterior cerebral artery. Compounds perforant path n. (also perforant pathway) Anatomy a tract of nerve fibres leading from lateral entorhinal area (the most posterior part of the pyriform lobe) to the hippocampus. ΚΠ 1947 Brain 70 189 The fibres from the lateral parts of the entorhinal area, however, pass as the so-called ‘perforant path’ to all sectors. 1967 Science 1 Sept. 1072/3 It is probable that olfactory impulses are relayed in part by the perforant pathway from the hippocampal gyrus. 1983 Brain Res. Bull. 10 699 Sustained electrical stimulation of the perforant path evokes granule cell population spikes and epileptiform discharges. 2000 Proc. National Acad. Sci. U.S.A. 97 14734/1 Here, the perforant pathway was stimulated, and field potentials were recorded from the granule cell layer of the dentate gyrus. This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022). < adj.1761
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