bipenniform

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bipenniform

[bī′pen·ə‚fȯrm]
(anatomy)
Of the arrangement of muscle fibers, resembling a feather barbed on both sides.
References in periodicals archive ?
Gurmit Singh observed rare case of bipennate first lumbrical muscle with the additional origin from the flexor digitorumsuperficialis in the hand distal to flexor retinaculum.
In the present study, third lumbrical are all of bipennate type of muscle in all the 40 specimens.