词族 · bract
词形变化
英语词源
- bract (n.)
- in botany, "small leaf at the base of a flower," Modern Latin, from Latin bractea, literally "thin metal plate," which is of unknown origin. Related: Bracteal; bracteate.
权威例句
- 1. Spadix rachis flat, margin with bract - like appendages; flowers small, monoecious, in 2 series on rachis, apetalous.
- 肉穗花序轴扁平, 边缘有苞片状附属物; 花小, 单性,雌雄同株, 呈2列排列于花序轴上, 无花被.