- Having a valency of seven
- Having seven units of appealing power or affinity; -- said of heptad elements or radicals.
- In chem., equivalent to seven atoms of hydrogen in incorporating or saturating power: put on an atom and this can be replaced for or changed by seven atoms of hydrogen. In addition heptatomic.
Sentence for "heptavalent"
- In the first 3 years after…
- View More