internal gear

noun Machinery.

a gear having teeth cut on an inner cylindrical surface.

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Nearby words

internal elastic lamina, internal energy, internal exile, internal fistula, internal fixation, internal gear, internal hemorrhage, internal hemorrhoid, internal hemorrhoids, internal iliac artery, internal iliac vein

Also called annular gear, ring gear.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019