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"