primitive element
element in a lattice that is not a positive integer multiple of another element in the lattice
en-US/ˈpɹɪmətɪv ˈɛləmənt/
en-GB/ˈpɹɪmɪtɪv ˈɛlɪmənt/
element in a lattice that is not a positive integer multiple of another element in the lattice