having annual rings marked by a conspicuous band of large pores in wood formed in spring.
noun, Plant Pathology. 1. a disease of potatoes, characterized by wilted foliage and rotting of the ring of vascular bundles in the tubers, caused by a bacterium, Corynebacterium sepedonicum. noun 1. a virulent bacterial disease of potatoes occurring in the vascular ring of the potato tuber Also called potato ring rot
noun, Nautical. 1. ringtail (def 3).
- Ring scotoma
ring scotoma n. An annular area of blindness in the visual field surrounding the point of fixation, associated with glaucoma and pigmentary degeneration of the retina.
noun 1. cuckold’s knot. cuckold’s knot noun, Nautical. 1. a hitch, as for holding a spar, consisting of a single loop with the overlapping parts of the rope seized together.