ptilo-comb. form

Stress is usually determined by a subsequent element and vowels may be reduced accordingly.

Forms: before a vowel ptil-.

Origin: A borrowing from Greek. Etymon: Greek πτίλο-.

Etymology: < Hellenistic Greek πτίλο-, combining form (in e.g. πτιλόνωτος having a downy back; rare) of ancient Greek πτίλον soft feather, down ( < an ablaut variant of the Indo-European base of ancient Greek πέτεσθαι to fly (see feather n.) + -ιλο- , hypocoristic suffix); compare -o- connective. Compare scientific Latin ptilo- (formations in which are found from the first half of the 19th cent.).Found in a small number of scientific terms from the late 19th cent., apparently earliest in the native formation ptilogenesis n. Combining with second elements ultimately of Greek origin.

Forming nouns and adjectives in sense ‘of, relating to, or resembling feathers, esp. down feathers’.

† ptilogenesis n. Zoology Obsolete rare the growth of feathers.Apparently only attested in dictionaries or glossaries.

ΚΠ

1895 New Sydenham Soc. Lexicon Ptilogenesis, the growth of feathers or quills.

ptilolite n.

Brit.

/ˈtɪlə(ʊ)lʌɪt/

/ˈtʌɪlə(ʊ)lʌɪt/

U.S.

/ˈtɪləˌlaɪt/

/ˈtaɪləˌlaɪt/

Mineralogy (now historical) a mineral now recognized as identical with mordenite.

ΚΠ

1886 W. Cross & L. G. Eakins in Amer. Jrnl. Sci. 32 118 Ptilolite, derived from πτίλον, down, in reference to the light, downy nature of its aggregates.

1934 Mineral Mag. 23 559 The minerals examined..are essentially high-silica heulandites, without any simple relation to mordenite or ptilolite.

1965 G. J. Williams Econ. Geol. N.Z. xiv. 230/1 Ptilolite, laumonite and stibnite were commonly reported from the propylites of the Hauraki gold field.

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

单词	ptilo-
释义	ptilo-comb. form Stress is usually determined by a subsequent element and vowels may be reduced accordingly. Forms: before a vowel ptil-. Origin: A borrowing from Greek. Etymon: Greek πτίλο-. Etymology: < Hellenistic Greek πτίλο-, combining form (in e.g. πτιλόνωτος having a downy back; rare) of ancient Greek πτίλον soft feather, down ( < an ablaut variant of the Indo-European base of ancient Greek πέτεσθαι to fly (see feather n.) + -ιλο- , hypocoristic suffix); compare -o- connective. Compare scientific Latin ptilo- (formations in which are found from the first half of the 19th cent.).Found in a small number of scientific terms from the late 19th cent., apparently earliest in the native formation ptilogenesis n. Combining with second elements ultimately of Greek origin. Forming nouns and adjectives in sense ‘of, relating to, or resembling feathers, esp. down feathers’. † ptilogenesis n. Zoology Obsolete rare the growth of feathers.Apparently only attested in dictionaries or glossaries. ΚΠ 1895 New Sydenham Soc. Lexicon Ptilogenesis, the growth of feathers or quills. ptilolite n. Brit. /ˈtɪlə(ʊ)lʌɪt/ , /ˈtʌɪlə(ʊ)lʌɪt/ , U.S. /ˈtɪləˌlaɪt/ , /ˈtaɪləˌlaɪt/ Mineralogy (now historical) a mineral now recognized as identical with mordenite. ΚΠ 1886 W. Cross & L. G. Eakins in Amer. Jrnl. Sci. 32 118 Ptilolite, derived from πτίλον, down, in reference to the light, downy nature of its aggregates. 1934 Mineral Mag. 23 559 The minerals examined..are essentially high-silica heulandites, without any simple relation to mordenite or ptilolite. 1965 G. J. Williams Econ. Geol. N.Z. xiv. 230/1 Ptilolite, laumonite and stibnite were commonly reported from the propylites of the Hauraki gold field. This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022). < comb. form1886
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