Definition for pitch circle - Oxford Dictionaries Online (World English)

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	pitch circle (pitch cir¦cle) noun Mechanics an imaginary circle concentric to a toothed wheel, along which the pitch of the teeth is measured.		More words in this category angle iron arc welding bascule bitumen box girder bucketwheel close-coupled erector geodesic grade infill lap 2 load-bearing metal pile 2 portal frame redundancy shear soil mechanics tension Nearby Words pit viper pit-a-pat pitahaya Pitcairn Islands pitch ¹ pitch ² pitch and putt pitch and run pitch bend pitch circle pitch control pitch pine pitch pipe pitch-and-toss pitch-black pitch-perfect pitchblende pitched battle pitcher ¹