n. In mathematics, a transverse axis.Lying or being across or in a cross direction; cross; thwart.Collateral.In anatomy and zoology, broader or wider than long; having its major diameter crosswise: noting various parts or organs which lie or are taken to run across other parts, or especially across the long axis of the whole body. See transversalis and transversus.In botany:Right and left or collateral with reference to the median plane.Being at right angles to the axial direction: for example, see transverse partition, below.In herpetology, specifically noting a bone of the skull which usually unites the palatine and the pterygoid bones with the maxilla.In heraldry, crossing the escutcheon from one side to the opposite one.Of the brain, a fissure beneath the fornix and the hemispheres, above the optic thalami, through which membranes and vessels are continued from the pia mater into the ventricles of the brain.n. In anatomy, a transversalis or transversus: as, the transverse of the abdomen, perineum, or sole of the foot.Crosswise; across; transversely.To overturn; turn topsyturvy.To change; transpose. Compare transprose.To transgress; run counter.