这个词是什么意思？
The most abundant natural aromatic organic polymer found in all vascular plants. Lignin together with cellulose and hemicellulose are the major cell wall components of the fibers of all wood and grass species. Lignin is composed of coniferyl, p-coumaryl, and sinapyl alcohols in varying ratios in different plant species. (From Merck Index, 11th ed)
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D008031 · MeSH 2026。
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