 The Latin term ‘analogia’ had various senses. In scriptural exegesis, according to Aquinas, analogy was the method of showing that one part of scripture did not conflict with another. In rhetoric and grammar, analogy was the method of settling a doubt about a word’s form by appeal to a similar and more certain case. Several twelfth-century theologians use the word in this sense. In translations of Pseudo-Dionysius, the term had a strictly ontological sense, for it refers to a being’s capacity for participation in divine perfections as this relates to lower or higher beings. In logic, authors were aware that the Greek word ‘αναλογια’, sometimes called ‘analogia’ in Latin, but often translated as ‘proportio’ or ‘proportionalitas’, referred to the comparison between two proportions. However, by the 1220s the word came to be linked with the phrase “in a prior and a posterior sense” and by the 1250s terms said according to a comparison of proportions were normally separated from terms said according to a prior and a posterior sense.