grit

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grit

(grit)
Denotes the size of a particle found on the surface of abrasive materials.

grit,

n the measurement of the abrasive particle size.

grit

a necessary part of the diet of birds especially layers. Plays a part in the trituration that goes on in the gizzard. Usually supplied as shellgrit or crushed limestone to add calcium to the diet.

grit pad
a laceration of the pad permits entry of pieces of grit causing lameness in dogs, especially racing Greyhounds. The grit works its way through the pad and may even invade the flexor tendon.