diametral /daɪˈæmɪtɹəl/adjective 2noun 1forms 1 adjective2 •Of, relating to, or measured across a diameter. •Contrary; diametrically opposed. noun1 •(no longer used) A diameter.[…] The incession or locall motion of animals is made vvith analogy unto this figure, by decussative diametrals, Quincunciall Lines and angles. — 1658 formsdiametrals
