trunk trait trunk morphology trait 2026-08-20T20:47:20Z Any measurable or observable characteristic related to the shape, structure, color or pattern of the organism subdivision which is the part of the body posterior to the cervical region (or head, when cervical region not present) and anterior to the caudal region. Includes the sacrum when present. Trait.ontology VT:0011360 thoracolumbar region morphology trait torso morphology trait