diameter
nounUK /daɪˈæmɪtə(ɹ)/ · US /daɪˈæmɪdɚ/
Etymology From Old French diametre (French diamètre), from Latin diametros, from Ancient Greek διάμετρος (diámetros) (γραμμή (grammḗ)) (diametros grammē, “line measuring across”), from διά (diá, “across”) + μέτρον (métron, “measure”). By surface analysis, dia- + -meter.
1
Geometry, Mathematics, Sciences Any straight line between two points on the circumference of a circle that passes through the center of the circle; a chord that passes through the center of the circle.
2
Geometry, Mathematics, Sciences The length of such a line.
- In cases without good face contact, the diameter of the toolholder at the front of the flange or the tool itself should not be any larger than the gage diameter of the toolholder shank from a bending stiffness viewpoint.2005, David A. Stephenson, John S. Agapiou, Metal Cutting Theory and Practice, page 280:
- Viable non-malformed singleton pregnancies were selected for cerebellar measurements; transcerebellar diameter, (TCD), left and right cerebellar diameters (LCD, RCD).2015 October 23, “Periconception Maternal Folate Status and Human Embryonic Cerebellum Growth Trajectories: The Rotterdam Predict Study”, in PLOS ONE, →DOI:
3
Geometry, Mathematics, Sciences The maximum distance between any two points in a metric space.
4
Graph theory, Mathematics, Sciences The maximum eccentricity over all vertices in a graph.
- Derived terms
- aerodiameter, circumdiameter, diameterwise, inner diameter, inside diameter, internal diameter, major diameter, minor diameter, multidiameter, tactical diameter
- Related terms
- diametric, diametrically, semidiameter, circumference, radius