open-grain, open-grained

Having a coarse texture. Also see coarse-textured, wide-ringed.
References in periodicals archive ?
It is believed that the dissolution rate may be affected by the grain structure of the copper because loose, open-grain structures, typically associated with columnar grain morphology, are perceived to dissolve more readily than tighter, fine, equiaxed grain structures.
A porcelain glaze features a whitewashed "hangup" of the glaze in corners and profile recesses, accenting the shape, emphasizing details and enhancing open-grain patterns in the wood.