spiraculumn.
/spʌɪˈrakjʊləm/ 1. = spiracle n.1 2b.
ΘΚΠ
the world > the earth > structure of the earth > structural features > volcanic formations > [noun] > volcanic vent
chimneyc1374
vent1604
firepit1651
spiraculum1670
spiracle1671
solfatara1764
sulphur1764
volcanic crater1776
fumarole1811
air volcano1814
mud volcano1816
salse1831
blowhole1858
pipe1877
soufrière1879
bocca1881
mofette1887
pan1888
blowing-cone1895
smoke-hole1899
fault-vent1903
1670 S. Wilson Lassels's Voy. Italy (new ed.) ii. 295 There are diuers spiracula, or Vents round about it, out of which the thick smoke presseth furiously.
a1705 J. Ray Three Physico-theol. Disc. (1713) i. iii. 13 The enclosed Fire was not of Force sufficient to make its way out, or found not Spiracula to vent itself.
1791 E. Darwin Bot. Garden: Pt. I i. Notes 12 The volcanos themselves appear to be spiracula or chimneys belonging to great central fires.
1820 T. S. Hughes Trav. Sicily I. iv. 115 It contains two principal spiracula, or vents, from whence..huge stones and rocks are precipitated.
2. = spiracle n.1 2.
ΘΚΠ
the world > matter > gas > air > fresh air > [noun] > supplying fresh air or ventilation > ventilator > ventilation opening or hole
breathinga1387
suspiralc1430
breathing hole?1440
wind-ventc1450
air hole1601
spiracle1620
ventage1623
spirament1654
wind-hole1683
spiraculuma1734
blowhole1858
a1734 R. North Examen (1740) ii. v. §74 360 Like a Chymist's Fire,..upon opening the Spiracula of the Furnace..the Flame broke out.
3. Zoology. = spiracle n.1 3c.
ΘΚΠ
the world > animals > animal body > general parts > internal organs and systems > [noun] > breathing-pore
respiracle1555
stigma1747
spiraculum1768
spiracle1775
breathing pore1796
1768 G. White Let. 12 Mar. in Nat. Hist. Selborne (1789) 40 If some curious gentleman would procure the head of a fallow-deer..he would find it furnished with two spiracula, or breathing-places, besides the nostrils.
1797 Encycl. Brit. VI. 676/2 All insects..respire through pores..which are termed spiracula.
1816 W. Kirby & W. Spence Introd. Entomol. (1818) II. 425 The remarkably large spiracula in glow-worms.
1878 F. J. Bell & E. R. Lankester tr. C. Gegenbaur Elements Compar. Anat. 396 Peripheral nerves pass out from the anterior ganglion... Others pass backwards to the spiracula.
This entry has not yet been fully updated (first published 1914; most recently modified version published online March 2022).
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