noun
covalent radius
Technical term in chemistry referring to half the distance between two identical atoms joined by a covalent bond.
炭素の共有結合半径は約77ピコメートルです。
The covalent radius of carbon is about 77 picometers.
Compound of 共有 (kyōyū, 'sharing') + 結合 (ketsugō, 'bond') + 半径 (hankei, 'radius'), directly translating the English term 'covalent radius'.