pseudo-axisn.

Brit.

/ˈs(j)uːdəʊˌaksɪs/, U.S.

/ˈsudoʊˌæksəs/

Forms: 1800s pseud-axis, 1800s– pseudo-axis.

Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: pseudo- comb. form, axis n.¹

Etymology: < pseudo- comb. form + axis n.¹, in sense 1 after German †Scheinaxe (1868 in the passage translated in quot. 1875; now Scheinachse).

1. Botany. = sympodium n.

ΘΚΠ

the world > plants > part of plant > stem or stalk > [noun] > sympodium or monopodium

sympodium1862

monopodium1875

pseudo-axis1875

sympode1880

1875 A. W. Bennett & W. T. T. Dyer tr. J. von Sachs Text-bk. Bot. 157 The apparent primary shoot, which in fact consists of the bases of consecutive bifurcations, may..be termed a Pseud-axis [Ger. Scheinaxe] or Sympodium.

1884 Proc. Royal Soc. 37 63 A sympodial arrangement is produced, which appears in the mature leaf as an apparently well-defined pseudo-axis or phyllopodium.

1934 A. Arber Gramineae xvii. 402 The pseudo-axis formed by the concentric leaf-sheaths of certain grasses is repeated in Veratrum album L.

1972 Amer. Jrnl. Bot. 59 675/1 When old it [sc. a gametophyte] appears as a piece of callous tissue rather than a near-diagrammatic pseudoaxis.

2. Crystallography. An axis with reference to which a structure displays pseudosymmetry.

ΚΠ

1934 Proc. Royal Soc. A. 145 83 The axial lengths quoted for potassium edingtonite are pseudo-axes, the true axes are twice the lengths given.

1957 C. B. Anfinsen et al. Adv. Protein Chem. XII. 149 In crystallographic jargon a nonintegral screw axis is a pseudo-axis.

2000 Jrnl. Physics & Chem. Solids 61 1249/2 In the low-temperature phase cations are ordered,..above T_c they start to perform in-plane rotations around the six-fold pseudo-axis.

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

单词	pseudo-axis
释义	pseudo-axisn. Brit. /ˈs(j)uːdəʊˌaksɪs/, U.S. /ˈsudoʊˌæksəs/ Forms: 1800s pseud-axis, 1800s– pseudo-axis. Origin: Formed within English, by compounding; modelled on a German lexical item. Etymons: pseudo- comb. form, axis n.¹ Etymology: < pseudo- comb. form + axis n.¹, in sense 1 after German †Scheinaxe (1868 in the passage translated in quot. 1875; now Scheinachse). 1. Botany. = sympodium n. ΘΚΠ the world > plants > part of plant > stem or stalk > [noun] > sympodium or monopodium sympodium1862 monopodium1875 pseudo-axis1875 sympode1880 1875 A. W. Bennett & W. T. T. Dyer tr. J. von Sachs Text-bk. Bot. 157 The apparent primary shoot, which in fact consists of the bases of consecutive bifurcations, may..be termed a Pseud-axis [Ger. Scheinaxe] or Sympodium. 1884 Proc. Royal Soc. 37 63 A sympodial arrangement is produced, which appears in the mature leaf as an apparently well-defined pseudo-axis or phyllopodium. 1934 A. Arber Gramineae xvii. 402 The pseudo-axis formed by the concentric leaf-sheaths of certain grasses is repeated in Veratrum album L. 1972 Amer. Jrnl. Bot. 59 675/1 When old it [sc. a gametophyte] appears as a piece of callous tissue rather than a near-diagrammatic pseudoaxis. 2. Crystallography. An axis with reference to which a structure displays pseudosymmetry. ΚΠ 1934 Proc. Royal Soc. A. 145 83 The axial lengths quoted for potassium edingtonite are pseudo-axes, the true axes are twice the lengths given. 1957 C. B. Anfinsen et al. Adv. Protein Chem. XII. 149 In crystallographic jargon a nonintegral screw axis is a pseudo-axis. 2000 Jrnl. Physics & Chem. Solids 61 1249/2 In the low-temperature phase cations are ordered,..above T_c they start to perform in-plane rotations around the six-fold pseudo-axis. This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022). < n.1875
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