leaf mosaicn.

Brit.

/ˈliːf mə(ʊ)ˌzeɪɪk/, U.S.

/ˈlif ˌmoʊˌzeɪɪk/

Origin: Formed within English, by compounding. Etymons: leaf n.¹, mosaic n.

Etymology: < leaf n.¹ + mosaic n. In sense 1 originally after German Blättermosaik (1887 in the source reviewed in quot. 1889; 1871 or earlier in more general sense ‘pattern made by leaves (e.g. on the forest floor)’).

1. Ecology. The arrangement or positioning of a plant's leaves so as to provide optimal exposure to the sun; an instance of this.

ΚΠ

1889 Nature 28 Mar. 508/1 ‘Leaf-mosaic’, or the relation of the form to the arrangement of leaves, as insuring the exposure of the maximum surface to light.

1974 A. Huxley Plant & Planet vii. 60 The most striking examples of leaf mosaics are usually found in plants of shady places.

2000 M. Roberts et al. Adv. Biol. xii. 201 Leaf mosaic makes beech woods very dark and the ground flora is sparse as a result.

2. Any plant disease characterized by mottled discoloration of the leaves (cf. mosaic n. 3d, mosaic disease n. at mosaic n. and adj.¹ Compounds 2); (also) this pattern of discoloration.

ΘΚΠ

the world > plants > disease or injury > [noun] > characterized by part affected or appearance produced

jaundice1600

black rot1769

root rot1831

leaf blight1849

leaf curl1850

black heart1862

icterus1866

albication1877

footrot1883

curl-leaf1886

silver top1890

stem-sickness1890

sleeping disease1899

mosaic1900

leaf mosaic1902

scorch1906

blotch1909

little leaf1911

ringspot1913

crinkle1920

vein banding1928

1902 Encycl. Brit. XXVI. 60/2 The juices of tobacco plants affected with the disease known as ‘leaf mosaic’.

1952 Athens (Ohio) Sunday Messenger 13 July 9 As to those plants that are affected with leaf mosaic, the best measure is to destroy the defective plants.

2006 Hort. Week 23 Feb. Many viruses typically cause leaf mosaic and mottling, ringspots, flower breaks, streaking, [etc.].

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

单词	leaf mosaic
释义	leaf mosaicn. Brit. /ˈliːf mə(ʊ)ˌzeɪɪk/, U.S. /ˈlif ˌmoʊˌzeɪɪk/ Origin: Formed within English, by compounding. Etymons: leaf n.¹, mosaic n. Etymology: < leaf n.¹ + mosaic n. In sense 1 originally after German Blättermosaik (1887 in the source reviewed in quot. 1889; 1871 or earlier in more general sense ‘pattern made by leaves (e.g. on the forest floor)’). 1. Ecology. The arrangement or positioning of a plant's leaves so as to provide optimal exposure to the sun; an instance of this. ΚΠ 1889 Nature 28 Mar. 508/1 ‘Leaf-mosaic’, or the relation of the form to the arrangement of leaves, as insuring the exposure of the maximum surface to light. 1974 A. Huxley Plant & Planet vii. 60 The most striking examples of leaf mosaics are usually found in plants of shady places. 2000 M. Roberts et al. Adv. Biol. xii. 201 Leaf mosaic makes beech woods very dark and the ground flora is sparse as a result. 2. Any plant disease characterized by mottled discoloration of the leaves (cf. mosaic n. 3d, mosaic disease n. at mosaic n. and adj.¹ Compounds 2); (also) this pattern of discoloration. ΘΚΠ the world > plants > disease or injury > [noun] > characterized by part affected or appearance produced jaundice1600 black rot1769 root rot1831 leaf blight1849 leaf curl1850 black heart1862 icterus1866 albication1877 footrot1883 curl-leaf1886 silver top1890 stem-sickness1890 sleeping disease1899 mosaic1900 leaf mosaic1902 scorch1906 blotch1909 little leaf1911 ringspot1913 crinkle1920 vein banding1928 1902 Encycl. Brit. XXVI. 60/2 The juices of tobacco plants affected with the disease known as ‘leaf mosaic’. 1952 Athens (Ohio) Sunday Messenger 13 July 9 As to those plants that are affected with leaf mosaic, the best measure is to destroy the defective plants. 2006 Hort. Week 23 Feb. Many viruses typically cause leaf mosaic and mottling, ringspots, flower breaks, streaking, [etc.]. This entry has been updated (OED Third Edition, September 2016; most recently modified version published online March 2022). < n.1889
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