Sentence:  And I who a fortnight before would joyfully have reckoned how long I could survive on the provisions that remained, probably with reference to the question of calories and vitamins, and established in my head a series of menus asymptotically approaching nutritional zero, was now content to note feebly that I should soon be dead of <WSD>inanition</WSD>. 
Meaning of the word marked with <WSD> tags:  A state of advanced lack of adequate nutrition, food or water, or a physiological inability to utilize them; starvation.