ptyxisn.

Brit.

/ˈtɪksɪs/, U.S.

/ˈtɪksᵻs/

Origin: A borrowing from Greek. Etymon: Greek πτύξις.

Etymology: < Hellenistic Greek πτύξις fold (perhaps already in ancient Greek in sense ‘fold’, although the reading in Hippocrates is uncertain) < the stem of ancient Greek πτύσσειν to fold ( < πτυχ- , πτύξ fold: see note) + -σις -sis suffix.The nominative πτύξ is only attested in later (Hellenistic Greek and Byzantine Greek) lexicographers and grammarians; Homer has the plural ancient Greek πτύχες ; ancient Greek πτυχή (see ptychode n.) represents a later form. N.E.D. (1909) gives the pronunciation as (pti·ksis) /ˈptɪksɪs/.

Botany.

The way in which the individual parts in a leaf- or flower-bud are folded. (Contrasted with vernation, aestivation, the arrangement of the parts collectively.)

ΚΠ

1879 A. Gray in A. Gray & G. L. Goodale Bot. Text-bk. (ed. 6) I. 132 Ptyxis..is coming into use as a general term for the folding, etc., of single parts.

1945 W. O. Howarth & L. G. G. Warne Lowson's Textbk. Bot. (ed. 9) vi. 136 Prefoliation includes (a) Ptyxis, or the form of the young leaves in the bud, i.e. the way in which they are folded or rolled on themselves; (b) Vernation, or the relation between the different leaves in the bud, i.e. the manner in which they are arranged with regard to each other.

1964 New Phytologist 63 442 The morphological part concentrates on..little-known characters such as ptyxis (the rolling or folding of individual organs in bud), palynology and embryology.

1996 Bot. Jrnl. Linn. Soc. 120 287 Stipules were found to have interlocking vernation; this type of ptyxis has not yet been reported from the Rubiaceae.

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

单词	ptyxis
释义	ptyxisn. Brit. /ˈtɪksɪs/, U.S. /ˈtɪksᵻs/ Origin: A borrowing from Greek. Etymon: Greek πτύξις. Etymology: < Hellenistic Greek πτύξις fold (perhaps already in ancient Greek in sense ‘fold’, although the reading in Hippocrates is uncertain) < the stem of ancient Greek πτύσσειν to fold ( < πτυχ- , πτύξ fold: see note) + -σις -sis suffix.The nominative πτύξ is only attested in later (Hellenistic Greek and Byzantine Greek) lexicographers and grammarians; Homer has the plural ancient Greek πτύχες ; ancient Greek πτυχή (see ptychode n.) represents a later form. N.E.D. (1909) gives the pronunciation as (pti·ksis) /ˈptɪksɪs/. Botany. The way in which the individual parts in a leaf- or flower-bud are folded. (Contrasted with vernation, aestivation, the arrangement of the parts collectively.) ΚΠ 1879 A. Gray in A. Gray & G. L. Goodale Bot. Text-bk. (ed. 6) I. 132 Ptyxis..is coming into use as a general term for the folding, etc., of single parts. 1945 W. O. Howarth & L. G. G. Warne Lowson's Textbk. Bot. (ed. 9) vi. 136 Prefoliation includes (a) Ptyxis, or the form of the young leaves in the bud, i.e. the way in which they are folded or rolled on themselves; (b) Vernation, or the relation between the different leaves in the bud, i.e. the manner in which they are arranged with regard to each other. 1964 New Phytologist 63 442 The morphological part concentrates on..little-known characters such as ptyxis (the rolling or folding of individual organs in bud), palynology and embryology. 1996 Bot. Jrnl. Linn. Soc. 120 287 Stipules were found to have interlocking vernation; this type of ptyxis has not yet been reported from the Rubiaceae. This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022). < n.1879
随便看	esparagrass esparcet esparcets esparse esparsette esparto esparto grass espartos espathate espaut españa especcion espece especial especial friend especial pleading especial tail especiality especially especialness especialty espeire espelers esperance esperances