presternumn.

Brit.

/ˌpriːˈstəːnəm/, U.S.

/priˈstərnəm/

Forms: 1800s– praesternum (now rare), 1800s– presternum.

Origin: Formed within English, by derivation. Etymons: pre- prefix, sternum n.

Etymology: < pre- prefix + sternum n. With sense 1a compare slightly earlier prosternum n.

1. Entomology.

†a. = prosternum n. Obsolete. rare.

ΘΚΠ

the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [noun] > thorax > prothorax > lower part of

pectus1819

prosternum1826

presternum1828

1828 J. Stark Elements Nat. Hist. II. 279 Pre-sternum dilated at its anterior extremity.

1836 H. McMurtrie Cuvier's Animal Kingdom IV. 141 The præsternum forms a sort of chin-cloth anteriorly.

b. A narrow sclerite present at the anterior end of the sternum of a segment in some insects.

ΚΠ

1902 Amer. Naturalist 36 25 Sometimes..the cephalic portion of the sternum is more or less separate from the main part; this detached portion may be termed the præsternum.

1946 Amer. Midland Naturalist 35 200 The ventral cervical sclerite..lies free, immediately anterior to the prothoracic presternum.

1994 P. J. Gullan & P. S. Cranston Insects ii. 42/1 Each eusternum may be simple or divided into separate sclerites—typically the presternum, basisternum and sternellum.

2. Anatomy and Zoology. The anterior or superior part of the sternum; the manubrium of the sternum.

ΘΚΠ

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

heartspoonc1405

spoon of the brisket1575

manubrium1705

xiphisternal1835

episternum1840

mesosternal1854

mesosternum1868

presternum1868

xiphisternum1872

sternebra1881

mesosterneber1890

mesosternebra1890

sternite1916

1868 W. K. Parker Monogr. Struct. & Devel. Shoulder-girdle & Sternum Vertebrata 89 The ‘præ-sternum’, or manubrium, the only part of the Sternum present in Anguis.

1903 Amer. Naturalist 37 823 In the moles change of position of the fore limb is correlated not only with the broadening but especially with the elongation of the presternum.

1937 Q. Rev. Biol. 12 448/1 Occasionally..insertion includes the presternum, and in particular cases..extends to the tuberosities of the humerus.

2004 Jrnl. Pediatric Surg. 39 1312/2 A horizontal incision of about 1.5 cm is placed in the skin 2 cm above presternum (sternal manubrium).

This entry has been updated (OED Third Edition, March 2007; most recently modified version published online March 2022).

单词	presternum
释义	presternumn. Brit. /ˌpriːˈstəːnəm/, U.S. /priˈstərnəm/ Forms: 1800s– praesternum (now rare), 1800s– presternum. Origin: Formed within English, by derivation. Etymons: pre- prefix, sternum n. Etymology: < pre- prefix + sternum n. With sense 1a compare slightly earlier prosternum n. 1. Entomology. †a. = prosternum n. Obsolete. rare. ΘΚΠ the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [noun] > thorax > prothorax > lower part of pectus1819 prosternum1826 presternum1828 1828 J. Stark Elements Nat. Hist. II. 279 Pre-sternum dilated at its anterior extremity. 1836 H. McMurtrie Cuvier's Animal Kingdom IV. 141 The præsternum forms a sort of chin-cloth anteriorly. b. A narrow sclerite present at the anterior end of the sternum of a segment in some insects. ΚΠ 1902 Amer. Naturalist 36 25 Sometimes..the cephalic portion of the sternum is more or less separate from the main part; this detached portion may be termed the præsternum. 1946 Amer. Midland Naturalist 35 200 The ventral cervical sclerite..lies free, immediately anterior to the prothoracic presternum. 1994 P. J. Gullan & P. S. Cranston Insects ii. 42/1 Each eusternum may be simple or divided into separate sclerites—typically the presternum, basisternum and sternellum. 2. Anatomy and Zoology. The anterior or superior part of the sternum; the manubrium of the sternum. ΘΚΠ the world > life > the body > structural parts > bone or bones > breastbone > [noun] > parts of heartspoonc1405 spoon of the brisket1575 manubrium1705 xiphisternal1835 episternum1840 mesosternal1854 mesosternum1868 presternum1868 xiphisternum1872 sternebra1881 mesosterneber1890 mesosternebra1890 sternite1916 1868 W. K. Parker Monogr. Struct. & Devel. Shoulder-girdle & Sternum Vertebrata 89 The ‘præ-sternum’, or manubrium, the only part of the Sternum present in Anguis. 1903 Amer. Naturalist 37 823 In the moles change of position of the fore limb is correlated not only with the broadening but especially with the elongation of the presternum. 1937 Q. Rev. Biol. 12 448/1 Occasionally..insertion includes the presternum, and in particular cases..extends to the tuberosities of the humerus. 2004 Jrnl. Pediatric Surg. 39 1312/2 A horizontal incision of about 1.5 cm is placed in the skin 2 cm above presternum (sternal manubrium). This entry has been updated (OED Third Edition, March 2007; most recently modified version published online March 2022). < n.1828
随便看	litigious litigiously litigiousness litigiousnesses liting litis-contestation litiscontestation litiscontestational litispendence litispendency litlum litlum and litlum litmus litmus blue litmus colour litmus liquor litmus paper litmus test litmus tincture litmuses litoptern litopternine litorean litote litotes