Definition of pitch circle in English:

pitch circle

Line breaks: pitch cir¦cle

noun

Mechanics
  • An imaginary circle concentric to a toothed wheel, along which the pitch of the teeth is measured.
    More example sentences
    • The velocity ratio is equal to the inverse ratio of the diameters of pitch circles.
    • The hypoid gears used in conventional axles do not have a true pitch circle since both sliding and rolling occurs at the teeth and the gears could not be replaced with frictional disks.

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Word of the day coloratura
Pronunciation: ˌkɒlərəˈtjʊərə
noun
elaborate ornamentation of a vocal melody