cutaneous/subcutaneous mechanoreceptor morphology trait Pacinian corpuscle morphology trait Trait.ontology VT:0000988 Any measurable or observable characteristic related to the shape, structure, color, or pattern of any of the rapidly adapting mechanoreceptors found in subcutaneous tissue beneath both hairy and glabrous skin, and which normally contain an afferent nerve fiber surrounded by a capsule with multiple concentric layers.