| diametral | (adj) related to or along a diameter, Syn. diametric, diametrical, Example: the diametral plane |
| Diametral | a. [ Gr. F. diamétral. ] Pertaining to a diameter; diametrical. [ 1913 Webster ]
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| Diametral | n. A diameter. [ Obs. ] Sir T. Browne. [ 1913 Webster ] |
| Diametrally | adv. Diametrically. |