灰赤杨
gray alder (Alnus incana)
Traditional: 灰赤楊
✍️ Practice Writing the Full Phrase
📖 Additional Information
English Phonetic:
grei
Detailed Definition:
n. a neutral achromatic color midway between white and black\nn. the SI unit of energy absorbed from ionizing radiation; equal to the absorption of one joule of radiation energy by one kilogram of matter; one gray equals 100 rad\nn. English radiobiologist in whose honor the gray (the SI unit of energy for the absorbed dose of radiation) was named (1905-1965)\nn. English poet best known for his elegy written in a country churchyard (1716-1771)