logos Play nounPlural form of logo.nounIn Presocratic philosophy, the principle governing the cosmos. In Stoicism, the active, material, rational principle of the cosmosnounAmong the Sophists, the topics of rational argument.nounIn Aristotelian philosophy, the appeal to reason.nounA form of rhetoric in which the writer or speaker uses logic as the main argumentnounThe word of God, which itself has creative power; a hypostasis associated with divine wisdomnounThe creative Second Person of the Trinity, which simultaneously is Himself God and also with God the Father.nounGraphic representations of an aligned set of sequences, such as DNA binding sites or protein sequences. Called logos because a given graphical representation aggregates disparate elements, much as does an artistic corporate logo.