eyespotn.
/ˈʌɪspɒt/, U.S. /ˈaɪˌspɑt/ 1. † c. A germination pore at the end of a coconut; = eye n.1 10b(d). Obsolete. rare.
a. A spot or marking on an insect's wing, flower, animal, etc., resembling an eye. Cf. ocellus n. 2.
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the world > animals > animal body > markings or colourings > [noun] > spotted marking > eye-like spot
oculus1797
eyespot1798
ocellus1826
eyemark1844
the world > matter > colour > variegation > spot of colour > [noun] > eye-shaped spot
eyea1398
eye1658
eye1681
eyespot1798
eye-point1846
ocellation1846
1798 E. Donovan Epitome Nat. Hist. Insects China at Papilio sesia Wings roundish, above yellowish, black at the ends..white eye-spots.
1801 R. Southey Thalaba II. vi. 26 Here amid her sable cup Shines the red eye-spot..The solitary twinkler of the night.
1879 J. Lubbock Sci. Lect. ii. 57 In Chœrocampa tersa, there is an eye-spot on each segment.
1882 Gardeners' Chron. 17 10 Calanthe Sandhurstiana..with an eye-spot at the base of the lip.
1925 W. L. Jepson Man. Flowering Plants Calif. 233 Petals pure white above the purple brown eye-spot, heavily penciled between the eye-spot and the gland.
1966 V. Nabokov Speak, Memory (U.S. rev. ed.) iii. 75 His brothers had stopped short in helpless excitement at the sight of the coveted insect.., its four cherry-red wings with a pavonian eyespot on each.
2010 Independent 9 July (Viewspaper section) 5/2 In British butterflies, the most obvious piece of mimicry..is the presence of eyespots on the wings.
b. A pigmented spot forming or corresponding to a rudimentary eye, esp. in an invertebrate. Cf. ocellus n. 1a.Eyespots, when functional, typically distinguish only between light and dark.
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the world > animals > animal body > general parts > head and neck > [noun] > rudimentary eye
eyespot1845
eye-point1846
1845 Encycl. Metrop. VII. 264/2 The anterior extremity..is formed by the projection of the forehead, distinguished by the red eye-spots.
1851 W. B. Carpenter Princ. Physiol. (ed. 3) xxi. 1064 These, as also Leeches, have numerous eye-spots.
1896 Bull. U.S. Fish Comm. 15 324 The eggs [of trout] develop very rapidly, so that the eye-spots become visible after 36 days.
a1933 J. A. Thomson Biol. for Everyman (1934) II. 1043 Through this wall protrude at the apex the two cilia. Near the apical end is a small bright-red spot, the eyespot , the function of which is obscure.
1960 D. C. Braungart & R. Buddeke Introd. Animal Biol. (ed. 5) xv. 219 At the anterior end of the brain [of Amphioxus] is a single pigmented spot termed the eyespot.
2003 Coloradoan (Fort Collins) (Nexis) 18 Apr. 11 e Famous for cartoonish eyespots and growing two heads.., planarians live their lives beneath stones and leaves.
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1885 H. O. Forbes Naturalist's Wanderings Eastern Archipel. i. ii. 27 The three eye-spots seen at the end of a cocoa-nut.
2. Any of various plant diseases characterized by the appearance of eye-like spots on leaves or stems; esp. (a) a disease of sugar cane caused by the fungus Bipolaris sacchari (family Pleosporaceae); (b) a disease of cereals and other grasses caused by the fungus Oculimacula yallundae (family Dermateaceae). Also with distinguishing word. Frequently attributive.sharp eyespot: see the first element.
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the world > plants > disease or injury > [noun] > type of disease > fungal > associated with crop or food plants
white rust1815
eyespot1898
1898 Exper. Station Rec. (U.S. Dept. Agric.) 10 57 Eye spot (Cercospora sacchari).
1957 Farmers' Bull. (U.S. Dept. Agric.) No. 1158. 9 Bacterial eye spot disease is characterized by round or elliptical, sometimes irregular, lesions on the leaves.
1968 Times 16 Dec. 7/2 The soil-borne diseases, take-all and eyespot.
1995 Farmers Weekly 31 Mar. 68/4 Eyespot lesions can be readily found in many wheat crops across the country.
2003 M. Dickinson Molecular Plant. Pathol. iii. 57 Cercospora species, causing such diseases as brown eye spot of coffee, frog-eye of tobacco and grey leaf spot of corn.
This entry has been updated (OED Third Edition, June 2014; most recently modified version published online June 2022).
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n.1798