from The Century Dictionary.
- noun In botany, the lignifying matter which is deposited on the inner surface of the cells of some plants, contributing to their thickness, as in the shell of the walnut; lignin.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Bot.) The thickening matter of woody cells; lignin.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun botany The
thickening matterof woody cells; lignin.
from Wiktionary, Creative Commons Attribution/Share-Alike License
In many plants -- such as trees -- in a certain stage of development, the substance lining the cells is very hard, and is termed _lignin_, or _sclerogen_.
The results of this inquiry are of importance, seeing that they clearly prove that even the hardest kind of cellulose -- _sclerogen_, in fact -- is capable of being assimilated by the