0 difficult to feel or understand:
Examination on arrival revealed the femoral pulses to be impalpable, with strong upper limb pulses.
The femoral pulses had become impalpable and an infusion of prostaglandins had been commenced at the referring hospital.
It is this playing between extremes, this state of perpetual instability between fixed grids and impalpable matter, between conceptual rigour and extreme playfulness, that make his art stand out.
As to the public school spirit, it is a real thing, but it is impalpable.
Coal is pulverised until it is practically an impalpable powder like flower.
It will require a much less impalpable situation to make any such promise.
It is a very fine impalpable dust which is being continually set in motion by the passage of tubs along the main ways.
In all these matters of an incoherent impalpable sort of war, the matter of communication is prime.
