All 4 Uses

immaterial
in
The Count of Monte Cristo
(Edited)

"True," said Monte Cristo, "the loss of a sum of money becomes almost immaterial with a fortune such as you possess, and to one of your philosophic spirit."
Chpt 59-60 *

immaterial = unimportant
But now we are alone,—although it is immaterial to me,—where are we going?
Chpt 85-86
"It is quite immaterial to me," said Monte Cristo, "and it was very unnecessary to disturb me at the opera for such a trifle."
Chpt 87-88
I rely much on external impressions; perhaps, with regard to you, they are immaterial, but I should be no artist if I had not some fancies.
Chpt 95-96

Definitions:

(1) (immaterial as in: immaterial to the problem at hand)
not important, or not relevant to the matter at hand

"Immaterial" is a commonly heard objection to introducing evidence or an argument in court.
(2) (meaning too rare to warrant focus)
not having physical substance