† ptilosisn.¹

Forms: 1600s–1800s ptylosis, 1700s–1800s ptilosis.

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

Etymology: < post-classical Latin ptilosis (1679 in the passage translated in quot. 1684) < Hellenistic Greek πτίλωσις disease of the eyelids, transferred use of πτίλωσις plumage (see ptilosis n.²; Hellenistic Greek πτίλος sore-eyed is derived < πτίλωσις disease of the eyelids). N.E.D. (1909) gives the pronunciation as (pt-, tilō^u·sis) /(p)tɪˈləʊsɪs/. The form ptylosis is probably a hypercorrect spelling.

Medicine. Obsolete. rare.

Falling out of the eyelashes; inflammation of the eyelids accompanied by this. Cf. madarosis n.

ΘΚΠ

the world > health and disease > ill health > a disease > disorders of eye > [noun] > other disorders of eyelids

ptilosis1684

trachoma1684

helosis1706

ptosis1710

blepharoptosis1807

symblepharon1819

raspberry lid1869

blepharospasm1872

sago-grain1873

gumming1874

Stellwag's sign1887

tylosis1890

cycloplegia1902

1684 tr. S. Blankaart Physical Dict. 240 Ptylosis is when the Brims of the Eye-lids being grown thick the Hairs of the Eye-Brows fall off.

1749 J. Barrow Dict. Medicum Universale Ptilosis,..a baldness of the eye-lashes.

1808 R. Willan On Cutaneous Dis. Introd. p. ii This will appear from comparing their [sc. the Greeks'] accounts of..Madarosis, Milphosis, Ptilosis, Alopecia and Ophiasis.

1835 R. Willis tr. P. Rayer Dis. Skin 1055 The fall of the eyelashes received the name of ptilosis, from the Greeks.

This entry has been updated (OED Third Edition, September 2007; most recently modified version published online December 2020).

ptilosisn.²

Brit.

/tᵻˈləʊsɪs/, U.S.

/təˈloʊsəs/

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

Etymology: < scientific Latin ptilosis ( J. K. W. Illiger Prodromus systematis mammalium et avium (1811) 150) < Hellenistic Greek πτίλωσις plumage < πτιλοῦν to furnish with wings or feathers ( < ancient Greek πτίλον soft feather, down: see ptilo- comb. form) + -ωσις -osis suffix.

Ornithology. Now rare.

The appearance or characteristics of the feathers (esp. the down feathers) of a bird; the plumage; the study of this. Cf. pterylography n.

ΚΠ

1858 R. G. Mayne Expos. Lexicon Med. Sci. (1860) 1040/1 Ptilosis..term applied by Illiger to the assemblage of feathers or to the plumage of birds.

1872 E. Coues Key to N. Amer. Birds 5 All a bird's feathers, of whatever kind and structure, taken together, constitute its ptilosis or Plumage.

1915 Auk 32 373 Mr. Miller..considers the ptilosis of the wing in various birds which have been received in the flesh from the New York Zoölogical Park.

1972 A. M. Lucas & P. R. Stettenheim Avian Anat. I. iii. 157/1 Pterylosis covers the implantation point for each feather follicle in the skin of the bird; ptilosis deals with the size, shape and appearance of the feather that comes from each follicle as well as the total plumage coat.

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

单词	ptilosis
释义	† ptilosisn.¹ Forms: 1600s–1800s ptylosis, 1700s–1800s ptilosis. Origin: A borrowing from Latin. Etymon: Latin ptilosis. Etymology: < post-classical Latin ptilosis (1679 in the passage translated in quot. 1684) < Hellenistic Greek πτίλωσις disease of the eyelids, transferred use of πτίλωσις plumage (see ptilosis n.²; Hellenistic Greek πτίλος sore-eyed is derived < πτίλωσις disease of the eyelids). N.E.D. (1909) gives the pronunciation as (pt-, tilō^u·sis) /(p)tɪˈləʊsɪs/. The form ptylosis is probably a hypercorrect spelling. Medicine. Obsolete. rare. Falling out of the eyelashes; inflammation of the eyelids accompanied by this. Cf. madarosis n. ΘΚΠ the world > health and disease > ill health > a disease > disorders of eye > [noun] > other disorders of eyelids ptilosis1684 trachoma1684 helosis1706 ptosis1710 blepharoptosis1807 symblepharon1819 raspberry lid1869 blepharospasm1872 sago-grain1873 gumming1874 Stellwag's sign1887 tylosis1890 cycloplegia1902 1684 tr. S. Blankaart Physical Dict. 240 Ptylosis is when the Brims of the Eye-lids being grown thick the Hairs of the Eye-Brows fall off. 1749 J. Barrow Dict. Medicum Universale Ptilosis,..a baldness of the eye-lashes. 1808 R. Willan On Cutaneous Dis. Introd. p. ii This will appear from comparing their [sc. the Greeks'] accounts of..Madarosis, Milphosis, Ptilosis, Alopecia and Ophiasis. 1835 R. Willis tr. P. Rayer Dis. Skin 1055 The fall of the eyelashes received the name of ptilosis, from the Greeks. This entry has been updated (OED Third Edition, September 2007; most recently modified version published online December 2020). ptilosisn.² Brit. /tᵻˈləʊsɪs/, U.S. /təˈloʊsəs/ Origin: A borrowing from Latin. Etymon: Latin ptilosis. Etymology: < scientific Latin ptilosis ( J. K. W. Illiger Prodromus systematis mammalium et avium (1811) 150) < Hellenistic Greek πτίλωσις plumage < πτιλοῦν to furnish with wings or feathers ( < ancient Greek πτίλον soft feather, down: see ptilo- comb. form) + -ωσις -osis suffix. Ornithology. Now rare. The appearance or characteristics of the feathers (esp. the down feathers) of a bird; the plumage; the study of this. Cf. pterylography n. ΚΠ 1858 R. G. Mayne Expos. Lexicon Med. Sci. (1860) 1040/1 Ptilosis..term applied by Illiger to the assemblage of feathers or to the plumage of birds. 1872 E. Coues Key to N. Amer. Birds 5 All a bird's feathers, of whatever kind and structure, taken together, constitute its ptilosis or Plumage. 1915 Auk 32 373 Mr. Miller..considers the ptilosis of the wing in various birds which have been received in the flesh from the New York Zoölogical Park. 1972 A. M. Lucas & P. R. Stettenheim Avian Anat. I. iii. 157/1 Pterylosis covers the implantation point for each feather follicle in the skin of the bird; ptilosis deals with the size, shape and appearance of the feather that comes from each follicle as well as the total plumage coat. This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022). < n.¹1684n.²1858
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† ptilosisn.1

ptilosisn.2

† ptilosisn.¹

ptilosisn.²