We have no meanings for "lengthy dissertation" in our records yet.
1 The wind-up of his lengthy dissertation was, as far as I can recollect, as follows:
2 More oaths followed, together with a lengthy dissertation on Gomez's ancestors, both immediate and remote.
3 Writer gives lengthy dissertation on vodka in Russian life.
4 The Wheel embarked on a lengthy dissertation while Jared's attention went back to the furtive girl.
5 Hereupon-probably to drown sad memories-helaunched forth into a lengthy dissertation on the unpleasantness of learning news a year late.
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