Last Updated:2025/11/29
(botany) 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.
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silver grain
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Source Word
silver grain
Noun
uncountable
Japanese Meaning
(植物学)中心部(心材)から外側(樹皮)へ向かって伸びる細胞組織の線状または板状の部分、すなわち髄射線。 / 樫の木などでは特に発達しており、ブナ、カエデ、マツ、サクラなどの木に比べて大きい。