triaxaladj.
Etymology: < tri- comb. form 1a + Latin axis axis n.1 + -al suffix1.Previous versions of the OED give the stress as: triˈaxal.
the world > relative properties > number > geometry > geometric space > [adjective] > having specific axes
1891 (at cited word) Triaxal coördinates.
This entry has not yet been fully updated (first published 1914; most recently modified version published online June 2019).