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octoid

From Wiktionary, the free dictionary

English

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Etymology

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From oct- +‎ -oid.

Adjective

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octoid (not comparable)

  1. (engineering) Being a form of gear or tooth that resembles the involute, but whose complete path of contact on the surface of a sphere is in the form of a figure eight.

References

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  • Mahmoud A. Mostafa, Mechanics of Machinery.