There have been many attempts to give a precise definition of beauty. In this article, I join a tradition of trinitarian reflection on beauty and attempt to add further clarity to a trinitarian definition of beauty. Beauty, in my construal, is the gravitas amoris of the triune being of love—it is, in other words, the objective attractional “force” or “weightiness” exerted by triune love on the soul by which one, if she yields to triune love, experiences the bliss and delight of triune love and is thereby drawn into deifying union. This article will proceed as follows: First, I will survey the relationship between beauty and love found in the classic philosophical tradition represented by Plato, Aristotle, and Plotinus. Then, I will survey this beauty–love relation in Christian thought from Augustine, Aquinas, Ficino, Edwards, and von Hildebrand. These figures will provide supporting evidence for my construal of beauty. I then turn to the constructive task. I argue that there is an abductive fit between the features of beauty and the nature of the Trinity. In light of this fit and the sources of traditional thought above, beauty is best thought of as the gravitas amoris—the weighty impression of God’s triune love in created things that draws one into the triune life and is experienced as delight when perceived. I conclude by answering objections and reflecting on how this account reframes the transcendentals and coordinates the experience of beauty with Christian love.