Diameter Definition
dī-ămĭ-tər
noun
A line segment passing through the center of a circle, sphere, etc. from one side to the other.
Webster's New World
The length of such a segment; width or thickness of a circular or spherical figure or object.
Webster's New World
Thickness or width.
American Heritage
The unit of measure of the magnifying power of a lens.
Webster's New World
(geometry) Any straight line between two points on the circumference of a circle that passes through the centre/center of the circle.
Wiktionary
Other Word Forms of Diameter
Noun
Singular:
diameter
Plural:
diametersOrigin of Diameter
-
From Old French diametre (French diamètre), from Latin diametrus, from Ancient Greek διάμετρος (diametros) (γραμμή (grammē)) (diametros grammē, “line measuring across”), from διά (dia, “across”) + μέτρον (metron, “measure”).
From Wiktionary
-
Middle English diametre from Old French from Latin diametrus from Greek diametros (grammē) diagonal (line) dia- dia- metron measure mē-2 in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
Find Similar Words
Find similar words to diameter using the buttons below.