1. (in anatomy) A small node, such as a solid skin lesion up to 1 cm deep.
2. (in botany) See root nodule.
A spherical or oval concretion.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。