plain whorl

plain whorl

[′plān ‚wərl]
(forensic science)
A whorl fingerprint pattern that has two deltas and at least one ridge making a complete circuit, which may be spiral, oval, circular, or any variant of a circle. An imaginary line drawn between the two deltas must touch or cross at least one of the recurving ridges within the inner pattern area.
References in periodicals archive ?
56%) in female followed by plain whorl pattern (24.