lordosisn.

Brit.

/lɔːˈdəʊsɪs/, U.S.

/lɔrˈdoʊsəs/

Inflections: Plural lordoses.

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

Etymology: < post-classical Latin lordosis curvature of the spine, producing convexity in front (1513 or earlier) < ancient Greek λόρδωσις < λορδοῦν to bend backward ( < λορδός bent backward, further etymology uncertain) + -σις -sis suffix.Ancient Greek λορδός has no surviving clear cognates, but it has been suggested that it is ultimately < an ablaut variant of the same Indo-European base as Middle High German lerz left (compare discussion at belirt v.).

1. Medicine and Veterinary Medicine. Originally: abnormal curvature of the spine resulting in a convexity which is forward-facing (in a person) or downward-facing (in a quadruped); the condition of having such curvature; an instance of such curvature. In later use also: a slight degree of such curvature occurring normally, esp. in the lumbar and cervical parts of the human spine.Abnormal lordosis often called swayback, esp. in horses.

ΘΚΠ

the world > health and disease > ill health > deformity > deformities of specific parts > [noun] > curvature of spine

curvity?a1425

lordosis1634

scoliosis1706

curvature1762

transcurvation1822

poker back1890

poker spine1917

1634 T. Johnson tr. A. Paré Chirurg. Wks. 605 But when it [sc. a dislocated vertebra] is depressed, it is named Lordosis [L. Lordosis], (Such we may terme, Saddle-bakt).

1716 E. Strother Criticon Febrium Introd. 61 So the Lordosis and Cuphosis are cur'd, if fresh, by Extension, and as in ordinary Laxations.

1822 J. M. Good Study Med. IV. 326 Lordosis..imported procurvation of the head and shoulders or anterior crookedness.

1899 T. C. Allbutt et al. Syst. Med. VII. 165 A lordosis was very evident.

1906 L. A. Merillat Princ. Vet. Surg. II. xv. 588 The deformities of the vertebral column are varied, presenting different abnormal incurvations—arch-backed or kyphosis; saddle-backed or lordosis; right or left inclination or scoliosis.

1961 Brit. Med. Jrnl. 6 Feb. 347/2 Similarly the middle bolster was designed to preserve the normal lordosis of the lumbar spine and thus reduce postoperative backache.

2007 A. Hinchcliffe Children with Cerebral Palsy (ed. 2) iv. 77 A child may develop it [sc. kyphosis] to compensate for a lordosis.

2. Zoology. The posture assumed during oestrus and mating by the female of certain species of mammal, in which she crouches on her forequarters and raises her rump, creating a dip in the back; the assumption of this posture; an instance of this.

ΘΚΠ

the world > animals > mammals > [noun] > sexual activity of > mating posture of

lordosis1933

1933 A. M. Hemmingsen in Skandinavisches Archiv f. Physiol. 65 114 Fruitful copulation is made possible by a characteristic lordosis or opisthotonus on the part of the female, consisting..in depression of the lumbar region of the back and elevation of the sacro-coccygeal region.

1957 Behaviour 10 350 Vigor refers to the character of the pattern of behavior, particularly the length of time strong lordoses can be elicited.

1974 M. W. Fox Understanding Your Cat v. 109 Each male..soon learns not to approach head-on but sideways from behind and only when the female shows lordosis.

2003 S. L. Vanderlip Guinea Pig Handbk. 131/2 When approached by a boar, she show her receptivity for breeding by arching her back and lifting her hindquarters (a position called ‘lordosis’).

This entry has been updated (OED Third Edition, June 2016; most recently modified version published online March 2022).

单词	lordosis
释义	lordosisn. Brit. /lɔːˈdəʊsɪs/, U.S. /lɔrˈdoʊsəs/ Inflections: Plural lordoses. Origin: A borrowing from Latin. Etymon: Latin lordosis. Etymology: < post-classical Latin lordosis curvature of the spine, producing convexity in front (1513 or earlier) < ancient Greek λόρδωσις < λορδοῦν to bend backward ( < λορδός bent backward, further etymology uncertain) + -σις -sis suffix.Ancient Greek λορδός has no surviving clear cognates, but it has been suggested that it is ultimately < an ablaut variant of the same Indo-European base as Middle High German lerz left (compare discussion at belirt v.). 1. Medicine and Veterinary Medicine. Originally: abnormal curvature of the spine resulting in a convexity which is forward-facing (in a person) or downward-facing (in a quadruped); the condition of having such curvature; an instance of such curvature. In later use also: a slight degree of such curvature occurring normally, esp. in the lumbar and cervical parts of the human spine.Abnormal lordosis often called swayback, esp. in horses. ΘΚΠ the world > health and disease > ill health > deformity > deformities of specific parts > [noun] > curvature of spine curvity?a1425 lordosis1634 scoliosis1706 curvature1762 transcurvation1822 poker back1890 poker spine1917 1634 T. Johnson tr. A. Paré Chirurg. Wks. 605 But when it [sc. a dislocated vertebra] is depressed, it is named Lordosis [L. Lordosis], (Such we may terme, Saddle-bakt). 1716 E. Strother Criticon Febrium Introd. 61 So the Lordosis and Cuphosis are cur'd, if fresh, by Extension, and as in ordinary Laxations. 1822 J. M. Good Study Med. IV. 326 Lordosis..imported procurvation of the head and shoulders or anterior crookedness. 1899 T. C. Allbutt et al. Syst. Med. VII. 165 A lordosis was very evident. 1906 L. A. Merillat Princ. Vet. Surg. II. xv. 588 The deformities of the vertebral column are varied, presenting different abnormal incurvations—arch-backed or kyphosis; saddle-backed or lordosis; right or left inclination or scoliosis. 1961 Brit. Med. Jrnl. 6 Feb. 347/2 Similarly the middle bolster was designed to preserve the normal lordosis of the lumbar spine and thus reduce postoperative backache. 2007 A. Hinchcliffe Children with Cerebral Palsy (ed. 2) iv. 77 A child may develop it [sc. kyphosis] to compensate for a lordosis. 2. Zoology. The posture assumed during oestrus and mating by the female of certain species of mammal, in which she crouches on her forequarters and raises her rump, creating a dip in the back; the assumption of this posture; an instance of this. ΘΚΠ the world > animals > mammals > [noun] > sexual activity of > mating posture of lordosis1933 1933 A. M. Hemmingsen in Skandinavisches Archiv f. Physiol. 65 114 Fruitful copulation is made possible by a characteristic lordosis or opisthotonus on the part of the female, consisting..in depression of the lumbar region of the back and elevation of the sacro-coccygeal region. 1957 Behaviour 10 350 Vigor refers to the character of the pattern of behavior, particularly the length of time strong lordoses can be elicited. 1974 M. W. Fox Understanding Your Cat v. 109 Each male..soon learns not to approach head-on but sideways from behind and only when the female shows lordosis. 2003 S. L. Vanderlip Guinea Pig Handbk. 131/2 When approached by a boar, she show her receptivity for breeding by arching her back and lifting her hindquarters (a position called ‘lordosis’). This entry has been updated (OED Third Edition, June 2016; most recently modified version published online March 2022). < n.1634
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