diametral

[dahy-am-i-truh l]

adjective

of a diameter.

forming a diameter.

Origin of diametral

1350–1400; Middle English < Medieval Latin diametrālis < Latin diametr(os) diameter + -ālis -al¹

Related formsdi·am·e·tral·ly, adverbnon·di·am·e·tral, adjectivenon·di·am·e·tral·ly, adverb

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for diametral

Historical Examples of diametral

Diam′etrally, in a diametral manner; Diamet′rically, exactly.
Chambers's Twentieth Century Dictionary (part 1 of 4: A-D)
Various
On the other diametral side of the coupling the strain due to the key is exerted on the top face of the key.
Modern Machine-Shop Practice, Volumes I and II
Joshua Rose
Supposing you wanted to know the number of teeth in a gear where the pitch diameter and the diametral pitch are given.
Practical Mechanics for Boys
J. S. Zerbe
The circumferential pitch is of course got by dividing the diametral pitch by π.
Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 5
Various
Diametral spines crossed loosely in the centre of the spherical or irregular roundish central capsule.
Report on the Radiolaria Collected by H.M.S. Challenger During the Years 1873-1876, First Part: Porulosa (Spumellaria and Acantharia)
Ernst Haeckel

British Dictionary definitions for diametral

diametral

adjective

located on or forming a diameterdiametral plane

a less common word for diametric

Derived Formsdiametrally, adverb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012