Fully-filled wood - Kanmanzai

Japanese: 完満材 - かんまんざい
Fully-filled wood - Kanmanzai

...Also, wood that has a dark center due to disease or other factors is called false heartwood.
[Material]
The trunk is generally long and conical or bullet-shaped, and those that do not taper much from bottom to top are called full wood (urabutori wood), while those that taper significantly are called uragoke wood (uragoke wood). Even within a single tree, the quality of the wood varies to a certain extent, and for example, the specific gravity can vary by 10 to 20 percent from the average value.

*Some of the terminology that refers to "fully filled timber" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…また,病害などの影響で中心部が濃色になったものを偽心材と呼ぶ。
[材質]
 幹の形は一般に長い円錐形または砲弾形であり,下から上への細りの少ないものを完満材(うらぶとり材),細りの著しいものを梢殺材(うらごけ材)という。1本の木の中でも材質はある程度ばらつき,例えば比重なども平均値に対して1~2割の部分差が出る。…

※「完満材」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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