結けつ合ごう半はん径けい

Meanings

1

noun

bond radius

Technical term in chemistry and materials science referring to the effective radius of an atom in a chemical bond.

diameter, path, method

原げん子し半はん径けい
Atomic radius refers to the size of an isolated atom, while bond radius is the effective radius of an atom when it is bonded to another atom.
共きょう有ゆう結けつ合ごう半はん径けい
Covalent bond radius is a specific type of bond radius for covalent bonds; 結合半径 is a broader term that can apply to various bond types.

Compound of 結合 (bond, union) and 半径 (radius). A calque from English 'bond radius'.