peritremen.

Brit.

/ˈpɛrɪtriːm/, U.S.

/ˈpɛrəˌtrim/

Forms:

α. 1800s– peritrema, 1900s– peritremata (plural, rare).

β. 1800s– peritreme.

Origin: A borrowing from Greek, combined with an English element. Etymons: peri- prefix, τρηματ-, τρῆμα.

Etymology: < peri- prefix + ancient Greek τρηματ-, τρῆμα perforation, hole (see trematode adj. and n.); in sense 1 after French péritrème (J. V. Audouin Hist. des insectes nuisibles (1842) i. ii. 67).With sense 2 compare earlier peristome n.

Zoology.

1. A small chitinous ring or tube surrounding a spiracle or breathing hole in some insects and arachnids, esp. acari.

ΘΚΠ

the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [noun] > respiration > ring surrounding spiracle

peritreme1843

1843 R. Owen Lect. Compar. Anat. Invertebr. Animals 383 (Gloss.) Peritrema, the raised margin which surrounds the breathing holes of scorpions.

1870 H. A. Nicholson Man. Zool. I. xxxvii. 203 Pulmonary sacs,..opening upon the under surface..by..stigmata, each of which is surrounded by a raised margin, or ‘peritrema’.

1901 17th Ann. Rep. Bureau Animal Industry 1900 (U.S. Dept. Agric.) 396 The stigmal plate, or peritreme.

1962 R. M. Gordon & M. M. J. Lavoipierre Entomol. for Students of Med. xxviii. 175 Each spiracle is almost round in outline and has a wide, strongly chitinised peritreme.

1990 Jrnl. Zool. 222 618 Peritreme short to long, extending to posterior margin of coxa I or the middle of coxa II.

†2. = peristome n. 2a. Obsolete.

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Mollusca > [noun] > Testacea (shelled molluscs) > shelled mollusc > shell > part of

auricle1665

heel1673

lip1681

mouth1681

whirl1681

rib1711

antihelix1721

canal1734

columella1755

vesture1755

body whirl1776

fent1776

pillar1776

pillar-lip1776

septum1786

aperture1794

body whorl1807

costa1812

seam1816

spine1822

umbo1822

varix1822

peristome1828

summit1828

nucleus1833

concameration1835

lunula1835

nympha1836

nymph1839

lunule1842

peritreme1848

body chamber1851

axis1866

umbone1867

liration1904

1848 S. V. Wood Monogr. Crag Mollusca I. p. xi The term labrum is applied to that portion of the peritreme which corresponds with the right hand of the investigator; while labium is given to its opposite or columella lip.

1888 T. H. Huxley & H. N. Martin Course Elem. Biol. iv. 274 The mouth or peritreme of the shell [of a snail].

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

单词	peritreme
释义	peritremen. Brit. /ˈpɛrɪtriːm/, U.S. /ˈpɛrəˌtrim/ Forms: α. 1800s– peritrema, 1900s– peritremata (plural, rare). β. 1800s– peritreme. Origin: A borrowing from Greek, combined with an English element. Etymons: peri- prefix, τρηματ-, τρῆμα. Etymology: < peri- prefix + ancient Greek τρηματ-, τρῆμα perforation, hole (see trematode adj. and n.); in sense 1 after French péritrème (J. V. Audouin Hist. des insectes nuisibles (1842) i. ii. 67).With sense 2 compare earlier peristome n. Zoology. 1. A small chitinous ring or tube surrounding a spiracle or breathing hole in some insects and arachnids, esp. acari. ΘΚΠ the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [noun] > respiration > ring surrounding spiracle peritreme1843 1843 R. Owen Lect. Compar. Anat. Invertebr. Animals 383 (Gloss.) Peritrema, the raised margin which surrounds the breathing holes of scorpions. 1870 H. A. Nicholson Man. Zool. I. xxxvii. 203 Pulmonary sacs,..opening upon the under surface..by..stigmata, each of which is surrounded by a raised margin, or ‘peritrema’. 1901 17th Ann. Rep. Bureau Animal Industry 1900 (U.S. Dept. Agric.) 396 The stigmal plate, or peritreme. 1962 R. M. Gordon & M. M. J. Lavoipierre Entomol. for Students of Med. xxviii. 175 Each spiracle is almost round in outline and has a wide, strongly chitinised peritreme. 1990 Jrnl. Zool. 222 618 Peritreme short to long, extending to posterior margin of coxa I or the middle of coxa II. †2. = peristome n. 2a. Obsolete. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Mollusca > [noun] > Testacea (shelled molluscs) > shelled mollusc > shell > part of auricle1665 heel1673 lip1681 mouth1681 whirl1681 rib1711 antihelix1721 canal1734 columella1755 vesture1755 body whirl1776 fent1776 pillar1776 pillar-lip1776 septum1786 aperture1794 body whorl1807 costa1812 seam1816 spine1822 umbo1822 varix1822 peristome1828 summit1828 nucleus1833 concameration1835 lunula1835 nympha1836 nymph1839 lunule1842 peritreme1848 body chamber1851 axis1866 umbone1867 liration1904 1848 S. V. Wood Monogr. Crag Mollusca I. p. xi The term labrum is applied to that portion of the peritreme which corresponds with the right hand of the investigator; while labium is given to its opposite or columella lip. 1888 T. H. Huxley & H. N. Martin Course Elem. Biol. iv. 274 The mouth or peritreme of the shell [of a snail]. This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022). < n.1843
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