main group (English, noun)
expansion: main group (plural main groups)
Senses:
topics: chemistry
natural-sciences
physical-sciences
glosses: In the periodic table of the elements, any of the eight groups (columns) of elements in the s and p blocks.
topics: chemistry
natural-sciences
physical-sciences
glosses: The same, plus the elements of group 12.
tags: dated
Forms:
form: main groups
tags: plural