The word metaphysical appears in the following sentences from Moby-Dick:
Chapter 1 > Paragraph 5 > Sentence 6:
Should you ever be athirst in the great American desert, try this experiment, if your caravan happen to be supplied with a metaphysical professor.
Chapter 1 > Paragraph 9 > Sentence 6:
Well, then, however the old sea-captains may order me about—however they may thump and punch me about, I have the satisfaction of knowing that it is all right; that everybody else is one way or other served in much the same way—either in a physical or metaphysical point of view, that is; and so the universal thump is passed round, and all hands should rub each other's shoulder-blades, and be content.
Concordance for the word metaphysical from Moby-Dick.