dextrorsaladj.
Etymology: < Latin dextrorsum (see dextrorse adj.) + -al suffix1.Previous versions of the OED give the stress as: dexˈtrorsal.
rare.
1828 N. Webster Dextrorsal, rising from right to left, as a spiral line or helix.
This entry has not yet been fully updated (first published 1895; most recently modified version published online June 2019).