smooth

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smooth

1. (of the skin) free from hair
2. not harsh or astringent
3. Maths (of a curve) differentiable at every point
4. Physics (of a plane, surface, etc.) regarded as being frictionless
5. Tennis squash badminton the side of a racket on which the binding strings form a continuous line

smooth

[smüth]
(oceanography)
Comparatively calm water between heavy seas.
(statistics)
To modify a sequential set of numerical data items in a manner designed to reduce the differences in value between adjacent items.
References in classic literature ?
We had played billiards in the Azores with balls that were not round and on an ancient table that was very little smoother than a brick pavement--one of those wretched old things with dead cushions, and with patches in the faded cloth and invisible obstructions that made the balls describe the most astonishing and unsuspected angles and perform feats in the way of unlooked-for and almost impossible "scratches" that were perfectly bewildering.
As the bight at Turner's Shipyard opened out, Charley edged into it to get the smoother water.
A lake like this is never smoother than at such a time; and the clear portion of the air above it being, shallow and darkened by clouds, the water, full of light and reflections, becomes a lower heaven itself so much the more important.
I know nothing about you - I speak of those I do know - and when I see the whole race of mankind (with a few rare exceptions) stumbling and blundering along the path of life, sinking into every pitfall, and breaking their shins over every impediment that lies in their way, shall I not use all the means in my power to insure for him a smoother and a safer passage?
His complexion, for instance, has a singular sallow-fairness, so much at variance with the dark-brown colour of his hair, that I suspect the hair of being a wig, and his face, closely shaven all over, is smoother and freer from all marks and wrinkles than mine, though