ring-porous

[ring-pawr-uhs, -pohr-]

adjective

Botany.

1. having annual rings marked by a conspicuous band of large pores in wood formed in spring.

Word History and Origins

Origin of ring-porous¹

First recorded in 1900–05

Example Sentences

That would represent the ring-porous woods, and the large tubes would be called vessels, or trache�.

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In order to fully understand the structure of wood, it is necessary to examine it still more closely thru the microscope, and since the three classes of wood, non-porous, ring-porous and diffuse-porous, differ considerably in their minute structure, it is well to consider them separately, taking the simplest first.

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Appearance of Wood: Color, brown, sap-wood thick, lighter; ring-porous; rings, plainly marked by large, open, scattered pores; grain, coarse, straight; rays, numerous, thin.

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Appearance of Wood: Color, light yellow, streaked with brown, sap-wood lighter; ring-porous; rings, clearly marked by 1 to 3 rows of large, open ducts; grain, straight; rays, numerous, obscure.

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Appearance of Wood: Color, reddish brown, sap-wood lighter; ring-porous; rings, marked by several rows of very large open ducts; grain, crooked; rays, thin.

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