lacunan.

Brit.

/ləˈkjuːnə/, U.S.

/ləˈk(j)unə/

Forms: Plural lacunæ, lacunas.

Etymology: < Latin lacūna a hole, pit, < lacus lake n.⁴ Compare lacune n.

1. In a manuscript, an inscription, the text of an author: A hiatus, blank, missing portion. Also transferred.

ΘΚΠ

society > communication > writing > written text > layout > [noun] > blank space in document

window1533

space1565

blankc1570

lacuna1663

lacune1701

1663 Sir R. Moray in O. Airy Lauderdale Papers (1884) I. 181 You do well to leave no Lacunas in your letters.

1694 E. Gibson Let. 13 June in H. Ellis Orig. Lett. Eminent Lit. Men (1843) 228 The lacuna of his behaviour in Holland, Dr. Gregory perhaps may be able to make up.

1851 D. Wilson Archæol. & Prehistoric Ann. Scotl. iv. iv. 548 The context which fills up the numerous lacunae of the time-worn inscription.

1875 H. J. S. Maine Lect. Early Hist. Inst. ix. 256 The description given..is followed by a lacuna in the manuscript.

1892 I. Zangwill Big Bow Myst. 147 There were various lacunæ and hypotheses in the case for the defence.

2. Chiefly in physical science: A gap, an empty space, spot, or cavity.

a. gen.

ΘΚΠ

the world > space > relative position > condition of being open or not closed > an opening or aperture > [noun]

holec725

thirla900

eyeOE

opena1200

opening?c1225

overturec1400

overta1425

wideness?c1425

howe1487

hiatus1563

vent1594

apertion1599

ferme1612

notch1615

sluice1648

gape1658

aperture1661

want1664

door1665

hiulcitya1681

to pass through the eye of a needle (also a needle's eye)1720

vista1727

light1776

ope1832

lacuna1872

doughnut hole1886

the world > space > place > absence > fact of being unoccupied > [noun] > an unoccupied space

vacuity?1541

vacuum1589

blanka1616

gapa1616

vacancy1652

space1654

evacuity1655

void1697

chasm1759

lacuna1872

null1887

1872 R. A. Proctor Ess. Astron. xxiv. 303 The gaps and lacunae are left relatively clear of lucid stars.

1879 F. Rutley Study of Rocks x. 107 Fluid lacunae..are of frequent occurrence in nepheline.

1880 Sat. Rev. 15 May 637 The curious lacuna in the field of vision, known as the blind spot.

b. Anatomy. ‘A mucous follicle; also, a space in the connective tissue giving origin to a lymphatic’ ( New Sydenham Soc. Lexicon 1888).

ΚΠ

1706 Phillips's New World of Words (new ed.) Lacunæ are certain small Pores or Passages in the Neck of the Womb.

1722 J. Quincy Lexicon Physico-medicum (ed. 2) 175 Between this Muscle [Sphincter] and the inner membrane of the Vagina, there are several little Glands, whose excretory Ducts are called Lacunæ.

1874 W. H. Van Buren & E. L. Keyes Pract. Treat. Surg. Dis. Genito-urinary Organs 77 Inflammation seals the orifice of the follicle and the lacuna is converted into a cyst containing pus.

c. Anatomy. One of the small cavities in the bone substance which contain the bone corpuscles or osteoblasts ( New Sydenham Soc. Lexicon 1888).

ΘΚΠ

the world > life > the body > structural parts > bone or bones > parts of bones > [noun] > socket or cavity

pita1275

bosom1578

socket1601

pot1610

glenoid surface1712

lacuna1845

1845 R. B. Todd & W. Bowman Physiol. Anat. I. 109 They [pores] soon arrange themselves in sets, each of which..discharges itself into a small cavity or lacuna.

1859 J. Tomes Syst. Dental Surg. 86 A bone lacuna, situated within a semi-circular indentation in the dentine, gives the appearance of a lacunal cell.

1867 J. Hogg Microscope (ed. 6) i. ii. 57 The observation of..the Haversian canals and the lacunæ of bones.

d. Zoology. One of the spaces left among the tissues of the lower animals, which serve in place of vessels for the circulation of the body fluids.

ΚΠ

1867 J. Hogg Microscope (ed. 6) ii. iii. 566 Minute capillary ramifications [in flukes] terminating in small oval shaped sacs or lacunæ.

e. Botany. An air-space in the cellular tissue of plants, an air-cell. Also, a small pit or depression on the upper surface of the thallus of lichens.

ΘΚΠ

the world > plants > part of plant > reproductive part(s) > spore or sporule > cryptogam or plant having spores > [noun] > parts of

lacuna1836

1836 J. C. Loudon Encycl. Plants (rev. ed.) 948 [Lichens] Lacunæ are small hollows or pits on the upper surface of the frond.

1856 in J. S. Henslow Dict. Bot.

1874 M. C. Cooke Fungi 41 In Tuburcinia, the minute cells are compacted into a hollow sphere, having lacunæ communicating with the interior.

This entry has not yet been fully updated (first published 1901; most recently modified version published online March 2022).

单词	lacuna
释义	lacunan. Brit. /ləˈkjuːnə/, U.S. /ləˈk(j)unə/ Forms: Plural lacunæ, lacunas. Etymology: < Latin lacūna a hole, pit, < lacus lake n.⁴ Compare lacune n. 1. In a manuscript, an inscription, the text of an author: A hiatus, blank, missing portion. Also transferred. ΘΚΠ society > communication > writing > written text > layout > [noun] > blank space in document window1533 space1565 blankc1570 lacuna1663 lacune1701 1663 Sir R. Moray in O. Airy Lauderdale Papers (1884) I. 181 You do well to leave no Lacunas in your letters. 1694 E. Gibson Let. 13 June in H. Ellis Orig. Lett. Eminent Lit. Men (1843) 228 The lacuna of his behaviour in Holland, Dr. Gregory perhaps may be able to make up. 1851 D. Wilson Archæol. & Prehistoric Ann. Scotl. iv. iv. 548 The context which fills up the numerous lacunae of the time-worn inscription. 1875 H. J. S. Maine Lect. Early Hist. Inst. ix. 256 The description given..is followed by a lacuna in the manuscript. 1892 I. Zangwill Big Bow Myst. 147 There were various lacunæ and hypotheses in the case for the defence. 2. Chiefly in physical science: A gap, an empty space, spot, or cavity. a. gen. ΘΚΠ the world > space > relative position > condition of being open or not closed > an opening or aperture > [noun] holec725 thirla900 eyeOE opena1200 opening?c1225 overturec1400 overta1425 wideness?c1425 howe1487 hiatus1563 vent1594 apertion1599 ferme1612 notch1615 sluice1648 gape1658 aperture1661 want1664 door1665 hiulcitya1681 to pass through the eye of a needle (also a needle's eye)1720 vista1727 light1776 ope1832 lacuna1872 doughnut hole1886 the world > space > place > absence > fact of being unoccupied > [noun] > an unoccupied space vacuity?1541 vacuum1589 blanka1616 gapa1616 vacancy1652 space1654 evacuity1655 void1697 chasm1759 lacuna1872 null1887 1872 R. A. Proctor Ess. Astron. xxiv. 303 The gaps and lacunae are left relatively clear of lucid stars. 1879 F. Rutley Study of Rocks x. 107 Fluid lacunae..are of frequent occurrence in nepheline. 1880 Sat. Rev. 15 May 637 The curious lacuna in the field of vision, known as the blind spot. b. Anatomy. ‘A mucous follicle; also, a space in the connective tissue giving origin to a lymphatic’ ( New Sydenham Soc. Lexicon 1888). ΚΠ 1706 Phillips's New World of Words (new ed.) Lacunæ are certain small Pores or Passages in the Neck of the Womb. 1722 J. Quincy Lexicon Physico-medicum (ed. 2) 175 Between this Muscle [Sphincter] and the inner membrane of the Vagina, there are several little Glands, whose excretory Ducts are called Lacunæ. 1874 W. H. Van Buren & E. L. Keyes Pract. Treat. Surg. Dis. Genito-urinary Organs 77 Inflammation seals the orifice of the follicle and the lacuna is converted into a cyst containing pus. c. Anatomy. One of the small cavities in the bone substance which contain the bone corpuscles or osteoblasts ( New Sydenham Soc. Lexicon 1888). ΘΚΠ the world > life > the body > structural parts > bone or bones > parts of bones > [noun] > socket or cavity pita1275 bosom1578 socket1601 pot1610 glenoid surface1712 lacuna1845 1845 R. B. Todd & W. Bowman Physiol. Anat. I. 109 They [pores] soon arrange themselves in sets, each of which..discharges itself into a small cavity or lacuna. 1859 J. Tomes Syst. Dental Surg. 86 A bone lacuna, situated within a semi-circular indentation in the dentine, gives the appearance of a lacunal cell. 1867 J. Hogg Microscope (ed. 6) i. ii. 57 The observation of..the Haversian canals and the lacunæ of bones. d. Zoology. One of the spaces left among the tissues of the lower animals, which serve in place of vessels for the circulation of the body fluids. ΚΠ 1867 J. Hogg Microscope (ed. 6) ii. iii. 566 Minute capillary ramifications [in flukes] terminating in small oval shaped sacs or lacunæ. e. Botany. An air-space in the cellular tissue of plants, an air-cell. Also, a small pit or depression on the upper surface of the thallus of lichens. ΘΚΠ the world > plants > part of plant > reproductive part(s) > spore or sporule > cryptogam or plant having spores > [noun] > parts of lacuna1836 1836 J. C. Loudon Encycl. Plants (rev. ed.) 948 [Lichens] Lacunæ are small hollows or pits on the upper surface of the frond. 1856 in J. S. Henslow Dict. Bot. 1874 M. C. Cooke Fungi 41 In Tuburcinia, the minute cells are compacted into a hollow sphere, having lacunæ communicating with the interior. This entry has not yet been fully updated (first published 1901; most recently modified version published online March 2022). < n.1663
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