What does "main group" mean?

In the periodic table of the elements, any of the eight groups (columns) of elements in the s and p blocks.

What is a synonym for "main group"?

Common synonyms include: central group, most portuguese.

noun

noun ·Rare ·Advanced level

Noun

1
In the periodic table of the elements, any of the eight groups (columns) of elements in the s and p blocks.
2
The same, plus the elements of group 12. dated