disputation

英 [dɪspjuː'teɪʃ(ə)n; -pjʊ't-] 美['dɪspjʊ'teʃən]

1. the formal presentation of and opposition to a stated proposition (usually followed by a vote)

2. a contentious speech act; a dispute where there is strong disagreement;: "they were involved in a violent argument"