辺へん材ざいへんざいじ字FuriganaMeanings1nounsapwood; alburnumBotanical term for the outer, living wood of a tree, contrasted with 心材 (heartwood).See also: 心材辺へん材ざいは心しん材ざいよりも色いろが薄うすい。Sapwood is lighter in color than heartwood.
