1670s, in botany, from Latin radicula, diminutive of radix (see radish).
例句
1. The root system of the soybean consists of a taproot formed by the radicle. 大豆的根系包括由胚根形成的主根.
2. Coleorhiza ( pl . coleorhizae ) The protective sheath surrounding the radicle in grasses. 胚根鞘:保护幼根的鞘状结构.
3. Among cotyledon , petiole of cotyledon, hypocotyl, and radicle, hypocotyl has the most responsive explants to 2, 4 - D . 在子叶 、 叶柄 、 胚轴以及胚根四者当中, 下胚轴对2, 4-D 的反应状况最好.