The Collaborative International Dictionary
Diametral \Di*am"e*tral\, n.
A diameter. [Obs.]
--Sir T. Browne.
Diametral \Di*am"e*tral\, a. [Gr. F. diam['e]tral.] Pertaining to a diameter; diametrical.
Diametral curve, Diametral surface (Geom.), any line or surface which bisects a system of parallel chords drawn in a curve or surface.
Diametral planes (Crystal.), planes in which two of the axes lie.
Wiktionary
a. 1 Of, relating to, or measured across a diameter. 2 contrary; diametrically opposed. n. (context obsolete English) A diameter.
WordNet
adj. related to or along a diameter; "the diametral plane" [syn: diametric, diametrical]
Usage examples of "diametral".
There is a dorsal spine with an arrangement of ribs below the shoulder plates, as you can see, but the lowermost rib—immediately above the body cavity—has developed into a massive hoop of bone with a diametral strut stretching forward from an enlarged spinal vertebra.
The alidade, or diametral rule, which served as a sun sight, could pick up the sun's shadow, and throw it across the coinciding circles of time and latitude.