ring spot

noun Plant Pathology.

any of various plant diseases caused by a virus or fungus and characterized by concentric rings of discoloration or necrosis on the leaves.

Origin of ring spot

First recorded in 1905–10

Words nearby ring spot

ringside seat, ring snake, Rings on her fingers and bells on her toes, ring spinning, ring-spinning frame, ring spot, ringster, ring stone, ringstraked, ring-streaked, ring syringe

Example sentences from the Web for ring spot

In this way the first ring-spot probably arose in some species on only one—the penultimate segment.
Studies in the Theory of Descent (Volumes 1 and 2)|August Weismann
The formation of the second ring-spot sometimes takes place in the present stage (Fig. 42).
Studies in the Theory of Descent (Volumes 1 and 2)|August Weismann
At a later period these two222 crescents and also the two primary nuclei coalesce, producing a ring-spot which, as in Fig. 61, Pl.
Studies in the Theory of Descent (Volumes 1 and 2)|August Weismann
On the first segment only there is210 no spot, and here no ring-spot is afterwards formed.
Studies in the Theory of Descent (Volumes 1 and 2)|August Weismann

单词	ring spot
释义	ring spot noun Plant Pathology. any of various plant diseases caused by a virus or fungus and characterized by concentric rings of discoloration or necrosis on the leaves. Origin of ring spot First recorded in 1905–10 Words nearby ring spot ringside seat, ring snake, Rings on her fingers and bells on her toes, ring spinning, ring-spinning frame, ring spot, ringster, ring stone, ringstraked, ring-streaked, ring syringe Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for ring spot In this way the first ring-spot probably arose in some species on only one—the penultimate segment. Studies in the Theory of Descent (Volumes 1 and 2)\|August Weismann The formation of the second ring-spot sometimes takes place in the present stage (Fig. 42). Studies in the Theory of Descent (Volumes 1 and 2)\|August Weismann At a later period these two222 crescents and also the two primary nuclei coalesce, producing a ring-spot which, as in Fig. 61, Pl. Studies in the Theory of Descent (Volumes 1 and 2)\|August Weismann On the first segment only there is210 no spot, and here no ring-spot is afterwards formed. Studies in the Theory of Descent (Volumes 1 and 2)\|August Weismann
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