baseform

noun
UK /ˈbeɪsfɔːm/
US /ˈbeɪsfɔːrm/

The simplest form of a word before you add anything to it.

The baseform of 'running' is 'run'.


OTHER MEANINGS

2. The original shape or version of something before changes are made.

The baseform of the sculpture was just a block of clay.

3. In chemistry, the simplest structure of a molecule before extra groups are attached.

Scientists studied the baseform of the compound first.

4. A starting model used to build other versions of a design.

The designer saved the baseform of the logo for future use.