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countable and uncountable, plural pandiculations
A stretching and stiffening of the trunk and extremities, as when fatigued and drowsy or on waking, often accompanied by yawning. quotations examples
If I were a visitor from another planet - but then, am I not a visitor from another planet? - I think that of all the earthlings' quirks it is the act of pandiculation that would surprise and fascinate me most, that slow stretch and then the soundless ape-howl, in which they indulge themselves with such languorous relish.
1993, John Banville, Ghosts