We found one dictionary that defines the word sigma pi and equivalent orbital models:

General (1 matching dictionary)

1. Sigma-pi and equivalent-orbital models: Wikipedia, the Free Encyclopedia

▸ Words similar to sigma pi and equivalent orbital models ▸ Usage examples for sigma pi and equivalent orbital models ▸ Idioms related to sigma pi and equivalent orbital models ▸ Wikipedia articles (New!) ▸ Words that often appear near sigma pi and equivalent orbital models ▸ Rhymes of sigma pi and equivalent orbital models ▸ Invented words related to sigma pi and equivalent orbital models