01 pref. A combining form denoting five; as, pentacapsular; pentagon.
-
1.
A combining form denoting five; as, pentacapsular; pentagon.
-
2.
Denoting the degree of five, either as regards quality, property, or composition; as, pentasulphide, containing five sulfur atoms; pentoxide, containing five oxygen atoms, etc. Also used adjectively.(Chem.)