博士はかせ論ろん文ぶんalso: はくしろんぶんはかせろんぶんMeanings1noundoctoral dissertation; doctoral thesisRefers to the written work submitted for a doctoral degree. Both はかせろんぶん and はくしろんぶん readings are used, with はかせ being more colloquial.彼かれは博士はかせ論ろん文ぶんの執しっ筆ぴつに3年ねんかけた。He spent three years writing his doctoral dissertation.