silver grain (English, noun)
expansion: silver grain (uncountable)
Senses:
topics: biology
botany
natural-sciences
glosses: The lines or narrow plates of cellular tissue which pass from the pith to the bark of an exogenous stem; the medullary rays. In the wood of the oak they are much larger than in that of the beech, maple, pine, cherry, etc.
tags: uncountable
Forms: