white rotn.

Brit.

/ˈwʌɪt ˌrɒt/, U.S.

/ˈ(h)waɪt ˌrɑt/

Origin: Formed within English, by compounding. Etymons: white adj., rot n.¹

Etymology: < white adj. + rot n.¹ Compare red rot n. With sense 2a compare German Weißfäule (1799 or earlier).

1. Chiefly English regional (originally northern). Marsh pennywort, Hydrocotyle vulgaris (formerly believed to cause liver rot in sheep). Formerly also: †butterwort, Pinguicula vulgaris (cf. rot-grass n. at rot n.¹ Compounds 2) (obsolete). Cf. red rot n. 1. Now rare and chiefly historical.

ΘΚΠ

the world > plants > particular plants > plants and herbs > aquatic, marsh, and sea-shore plants > [noun] > marsh pennywort

sheep-killing penny-grass?1523

wood-nep1526

pennywort1578

sheep-killing pennygrass1578

fluke-wort1597

penny-rot1597

sheep's bane1597

white rot1597

fairies' table1878

1597 J. Gerard Herball ii. 424 Water Pennywoort is called..in English Sheepes killing Pennygrasse, Penny rot, & in the north countrie White rot.

1640 J. Parkinson Theatrum Botanicum 534 They call it [sc. butterwort] White rot,..for the Country people doe thinke their sheepe will catch the rot, if for hunger they should eate thereof.

1670 J. Ray Catalogus Plantarum Angliæ 84 Cotyledon aquatica... Marsh-Pennywort, White Rot. In paludosis.

1733 J. Alleyne New Eng. Dispensatory i. 59/1 In English Marsh Penny-wort and White Rot.

1793 C. Milne Indigenous Bot. I. 377 The name White Rot is employed to distinguish the plant in question from another of the same imagined destructive tendency, termed Red Rot.

1861 P. Lankester Wild Flowers 61 Marsh Pennywort..known as Pennygrass, White-rot, Fluke-wort, and Sheep's-bane.

1886 R. Holland Gloss. Words County of Chester 389 White Rot, Hydrocotyle vulgaris.

1960 S. Ary & M. Gregory Oxf. Bk. Wild Flowers 46/2 Marsh Pennywort or White-rot (Hydrocotyle vulgaris). This small, creeping or floating plant..differs from other Umbellifers in having undivided round leaves, with the leaf stalk attached at the centre of the leaf blade.

a. Fungal decay of trees or timber in which there is whitish discoloration of the wood (most commonly occurring in hardwoods in damp conditions); an instance of this. Cf. red rot n. 3.

ΘΚΠ

the world > plants > disease or injury > [noun] > type of disease > fungal > associated with trees

heart rot1808

white rot1828

sap-rot1838

red rot1847

conk1851

soft rot1886

pine blister1889

silver-leaf1890

leaf shedding1891

pine rust1893

leaf cast1894

partridge-wood1894

larch blister1895

needle-cast1895

sooty mould1901

white pine blister rust1909

larch needle cast1921

coral-spot1923

ink disease1923

pocket rot1926

wood rot1926

Dutch elm disease1927

oak wilt1942

ash dieback1957

1828 in W. Withers Let. to Scott exposing Errors in Ess. Planting 97 Pollard trees, from undergoing repeated toppings, have this defect, the white rot, more than any other.

1828 New Eng. Farmer 4 July 394/2 In October 1825, I examined both pieces, and found the one that was felled in June was affected with white rot, all through the timber.

1834 J. J. Audubon Ornithol. Biogr. II. 237 They..sound the whole of its bark, to enable them to judge if the tree has been attacked by the white rot.

1893 J. Nisbet Brit. Forest Trees 227 Species of Polyporus cause red and white rot in the timber.

1946 K. T. Cartwright & W. P. K. Findlay Decay of Timber iv. 48 In a white rot all the components of the wood, including the lignin, are decomposed.

1969 G. Becker in K. Krishna & F. M. Weesner Biol. Termites I. xi. 356 A large number of mold fungi, white-rot fungi, and bacteria can produce toxic substances.

2001 A. Unger et al. Conservation Wood Artifacts v. 104 White rot does not cause as much reduction in strength as brown rot, because the cellulose framework is not attacked as much.

b. Any of various fungal diseases of plants causing decay of tissue, often with formation of white mycelium, esp. those caused by the ascomycetes Sclerotium cepivorum (in onions and related plants) and Coniella diplodiella (in grapes); an instance of this. Cf. red rot n. 2.

ΘΚΠ

the world > plants > disease or injury > [noun] > type of disease > fungal > associated with crop or food plants > various diseases

red rot1798

bunt1800

heart rot1808

yellow rust1808

pepperbrand1842

black spot1847

take-all1865

anthracnose1877

coffee-leaf disease1877

white rot1879

bladder-brand1883

basal rot1896

whitehead1898

black root rot1901

chancre1903

black pod1904

bud-rot1906

frog-eye1906

wildfire1918

pasmo1926

blind-seed disease1939

sharp eyespot1943

1879 Gardeners' Chron. 11Jan. 43/2 The principal diseases of Hyacinths known at Haarlem are three, viz., the ring disease, the black rot, and the white rot.

1883 Science 20 Apr. 316/1 The mycelium of this fungus..enters the roots of the vines which have been attacked by the Phylloxera, and produces a white rot, commonly known as pourridié.

1916 Fur News Dec. 69/1 The white-rot, or crown-rot,..is known to occur in most ginseng-growing regions.

1951 Dict. Gardening (Royal Hort. Soc.) III. 1426/1 White Rot of onions due to the fungus Sclerotium cepivorum shows when..affected plants are seen to have rotten roots while the base of the bulb is covered with a very white, fluffy mycelium.

2002 Gardens Illustr. Sept. 95/2 The most serious disease affecting the allium family is onion white rot.

This entry has been updated (OED Third Edition, March 2015; most recently modified version published online December 2021).

单词	white rot
释义	white rotn. Brit. /ˈwʌɪt ˌrɒt/, U.S. /ˈ(h)waɪt ˌrɑt/ Origin: Formed within English, by compounding. Etymons: white adj., rot n.¹ Etymology: < white adj. + rot n.¹ Compare red rot n. With sense 2a compare German Weißfäule (1799 or earlier). 1. Chiefly English regional (originally northern). Marsh pennywort, Hydrocotyle vulgaris (formerly believed to cause liver rot in sheep). Formerly also: †butterwort, Pinguicula vulgaris (cf. rot-grass n. at rot n.¹ Compounds 2) (obsolete). Cf. red rot n. 1. Now rare and chiefly historical. ΘΚΠ the world > plants > particular plants > plants and herbs > aquatic, marsh, and sea-shore plants > [noun] > marsh pennywort sheep-killing penny-grass?1523 wood-nep1526 pennywort1578 sheep-killing pennygrass1578 fluke-wort1597 penny-rot1597 sheep's bane1597 white rot1597 fairies' table1878 1597 J. Gerard Herball ii. 424 Water Pennywoort is called..in English Sheepes killing Pennygrasse, Penny rot, & in the north countrie White rot. 1640 J. Parkinson Theatrum Botanicum 534 They call it [sc. butterwort] White rot,..for the Country people doe thinke their sheepe will catch the rot, if for hunger they should eate thereof. 1670 J. Ray Catalogus Plantarum Angliæ 84 Cotyledon aquatica... Marsh-Pennywort, White Rot. In paludosis. 1733 J. Alleyne New Eng. Dispensatory i. 59/1 In English Marsh Penny-wort and White Rot. 1793 C. Milne Indigenous Bot. I. 377 The name White Rot is employed to distinguish the plant in question from another of the same imagined destructive tendency, termed Red Rot. 1861 P. Lankester Wild Flowers 61 Marsh Pennywort..known as Pennygrass, White-rot, Fluke-wort, and Sheep's-bane. 1886 R. Holland Gloss. Words County of Chester 389 White Rot, Hydrocotyle vulgaris. 1960 S. Ary & M. Gregory Oxf. Bk. Wild Flowers 46/2 Marsh Pennywort or White-rot (Hydrocotyle vulgaris). This small, creeping or floating plant..differs from other Umbellifers in having undivided round leaves, with the leaf stalk attached at the centre of the leaf blade. 2. a. Fungal decay of trees or timber in which there is whitish discoloration of the wood (most commonly occurring in hardwoods in damp conditions); an instance of this. Cf. red rot n. 3. ΘΚΠ the world > plants > disease or injury > [noun] > type of disease > fungal > associated with trees heart rot1808 white rot1828 sap-rot1838 red rot1847 conk1851 soft rot1886 pine blister1889 silver-leaf1890 leaf shedding1891 pine rust1893 leaf cast1894 partridge-wood1894 larch blister1895 needle-cast1895 sooty mould1901 white pine blister rust1909 larch needle cast1921 coral-spot1923 ink disease1923 pocket rot1926 wood rot1926 Dutch elm disease1927 oak wilt1942 ash dieback1957 1828 in W. Withers Let. to Scott exposing Errors in Ess. Planting 97 Pollard trees, from undergoing repeated toppings, have this defect, the white rot, more than any other. 1828 New Eng. Farmer 4 July 394/2 In October 1825, I examined both pieces, and found the one that was felled in June was affected with white rot, all through the timber. 1834 J. J. Audubon Ornithol. Biogr. II. 237 They..sound the whole of its bark, to enable them to judge if the tree has been attacked by the white rot. 1893 J. Nisbet Brit. Forest Trees 227 Species of Polyporus cause red and white rot in the timber. 1946 K. T. Cartwright & W. P. K. Findlay Decay of Timber iv. 48 In a white rot all the components of the wood, including the lignin, are decomposed. 1969 G. Becker in K. Krishna & F. M. Weesner Biol. Termites I. xi. 356 A large number of mold fungi, white-rot fungi, and bacteria can produce toxic substances. 2001 A. Unger et al. Conservation Wood Artifacts v. 104 White rot does not cause as much reduction in strength as brown rot, because the cellulose framework is not attacked as much. b. Any of various fungal diseases of plants causing decay of tissue, often with formation of white mycelium, esp. those caused by the ascomycetes Sclerotium cepivorum (in onions and related plants) and Coniella diplodiella (in grapes); an instance of this. Cf. red rot n. 2. ΘΚΠ the world > plants > disease or injury > [noun] > type of disease > fungal > associated with crop or food plants > various diseases red rot1798 bunt1800 heart rot1808 yellow rust1808 pepperbrand1842 black spot1847 take-all1865 anthracnose1877 coffee-leaf disease1877 white rot1879 bladder-brand1883 basal rot1896 whitehead1898 black root rot1901 chancre1903 black pod1904 bud-rot1906 frog-eye1906 wildfire1918 pasmo1926 blind-seed disease1939 sharp eyespot1943 1879 Gardeners' Chron. 11Jan. 43/2 The principal diseases of Hyacinths known at Haarlem are three, viz., the ring disease, the black rot, and the white rot. 1883 Science 20 Apr. 316/1 The mycelium of this fungus..enters the roots of the vines which have been attacked by the Phylloxera, and produces a white rot, commonly known as pourridié. 1916 Fur News Dec. 69/1 The white-rot, or crown-rot,..is known to occur in most ginseng-growing regions. 1951 Dict. Gardening (Royal Hort. Soc.) III. 1426/1 White Rot of onions due to the fungus Sclerotium cepivorum shows when..affected plants are seen to have rotten roots while the base of the bulb is covered with a very white, fluffy mycelium. 2002 Gardens Illustr. Sept. 95/2 The most serious disease affecting the allium family is onion white rot. This entry has been updated (OED Third Edition, March 2015; most recently modified version published online December 2021). < n.1597
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