This YouTube video identifies Partialism as a heresy. It states that Partialism is the heresy wherein The Father, Son, and Holy Spirit are each described as 1/3 of God. To me, it's a vaguely familiar ...
The shamrock is a pretty bad analogy for the Trinity. In fact, it's somewhat of a heretical explanation if one puts much emphasis on it. It's partialism: https://www.youtube.com/watch?v=KQLfgaUoQCw ...