penniformadj.

Brit.

/ˈpɛnᵻfɔːm/, U.S.

/ˈpɛnəˌfɔrm/

Forms: 1700s penniforme, 1700s– penniform.

Origin: A borrowing from Latin. Etymon: Latin penniformis.

Etymology: < post-classical Latin penniformis (G. A. Borelli De Motu Animalium (1685) I. xv. 123) < penna feather (see pen n.³) + -formis -form comb. form².

Anatomy and Biology.

Resembling a feather; spec. (of a muscle) having fibres attached to a tendon like the barbs of a feather to the rachis (= pennate adj. 3).

ΘΚΠ

the world > life > the body > structural parts > muscle > types of muscles > [adjective]

orbicular1615

biceps1634

bicipital1646

trigastric1676

adducent1694

biventral1706

attollent1713

penniform1713

antagonistic1725

monogastric1749

adductory1752

sublime1800

pennated1836–9

intrinsic1839

pennate1877

sphincteric1883

sphinctrate1887

sphincterial1889

agonistic1905

sphinctered1963

1713 W. Cheselden Anat. Humane Body ii. 90 A Penniforme Muscle.

1734 G. Douglas tr. J. B. Winslow Anat. Expos. I. 4 When the compound Muscle is made up of two simple Muscles only, these are so disposed as to represent a Feather, and the compound muscle is from thence termed Penniform.

1770 Philos. Trans. 1769 (Royal Soc.) 59 207 This..vessel consists of a trunk running on the side just opposite to the ribs, and from this trunk proceed branches on each side immediately under the skin; so that it has a beautiful penniform appearance.

1808 J. Barclay Muscular Motions 414 The carneous fibres by their lateral attachments shorten the tendons of penniform muscles.

1846 J. D. Dana U.S. Exploring Exped.: Zoophytes 594 Penniform or plume-shape.

1881 St. G. Mivart Cat 128 Sometimes the fasciculi radiate from a central band of dense fibrous tissue in a penniform or semi-penniform manner.

1965 Proc. Royal Soc. B. 162 137 The maximum tension transmitted by the collagen tendons of three fusiform muscles was over fifty per cent greater than that transmitted by the same amount of tendon collagen in three penniform muscles.

2003 Surg. & Radiol. Anat. 25 270 The masseter muscle displays a penniform structure.

Derivatives

† penniformwise adv. Obsolete rare in a penniform manner.

ΚΠ

1841 R. Owen in Todd's Cycl. Anat. & Physiol. III. 287 The fibres converge penniformwise to a strong..tendon.

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

单词	penniform
释义	penniformadj. Brit. /ˈpɛnᵻfɔːm/, U.S. /ˈpɛnəˌfɔrm/ Forms: 1700s penniforme, 1700s– penniform. Origin: A borrowing from Latin. Etymon: Latin penniformis. Etymology: < post-classical Latin penniformis (G. A. Borelli De Motu Animalium (1685) I. xv. 123) < penna feather (see pen n.³) + -formis -form comb. form². Anatomy and Biology. Resembling a feather; spec. (of a muscle) having fibres attached to a tendon like the barbs of a feather to the rachis (= pennate adj. 3). ΘΚΠ the world > life > the body > structural parts > muscle > types of muscles > [adjective] orbicular1615 biceps1634 bicipital1646 trigastric1676 adducent1694 biventral1706 attollent1713 penniform1713 antagonistic1725 monogastric1749 adductory1752 sublime1800 pennated1836–9 intrinsic1839 pennate1877 sphincteric1883 sphinctrate1887 sphincterial1889 agonistic1905 sphinctered1963 1713 W. Cheselden Anat. Humane Body ii. 90 A Penniforme Muscle. 1734 G. Douglas tr. J. B. Winslow Anat. Expos. I. 4 When the compound Muscle is made up of two simple Muscles only, these are so disposed as to represent a Feather, and the compound muscle is from thence termed Penniform. 1770 Philos. Trans. 1769 (Royal Soc.) 59 207 This..vessel consists of a trunk running on the side just opposite to the ribs, and from this trunk proceed branches on each side immediately under the skin; so that it has a beautiful penniform appearance. 1808 J. Barclay Muscular Motions 414 The carneous fibres by their lateral attachments shorten the tendons of penniform muscles. 1846 J. D. Dana U.S. Exploring Exped.: Zoophytes 594 Penniform or plume-shape. 1881 St. G. Mivart Cat 128 Sometimes the fasciculi radiate from a central band of dense fibrous tissue in a penniform or semi-penniform manner. 1965 Proc. Royal Soc. B. 162 137 The maximum tension transmitted by the collagen tendons of three fusiform muscles was over fifty per cent greater than that transmitted by the same amount of tendon collagen in three penniform muscles. 2003 Surg. & Radiol. Anat. 25 270 The masseter muscle displays a penniform structure. Derivatives † penniformwise adv. Obsolete rare in a penniform manner. ΚΠ 1841 R. Owen in Todd's Cycl. Anat. & Physiol. III. 287 The fibres converge penniformwise to a strong..tendon. This entry has been updated (OED Third Edition, September 2005; most recently modified version published online June 2022). < adj.1713
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