Diameter Meaning

/daɪˈæmɪtə(ɹ)/
B1

Definition, CEFR level B1, pronunciation, examples, and quiz.

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nounAny straight line between two points on the circumference of a circle that passes through the centre/center of the circle; a chord that passes through the center of the circle.

nounAny 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.

The pond is 100 meters in diameter.
The diameter of the hole was slightly larger.
CEFR Practice Quiz
The pizza's ____ was exactly thirty centimeters, as the box stated.
CEFR Practice Quiz (Alternate)
The pond is 100 meters in ____.

Etymology tree Proto-Indo-European *dwóh₁ Proto-Indo-European *dwísder. Ancient Greek διά (diá) Ancient Greek δῐᾰ- (dĭă-) Proto-Indo-European *meh₁- Proto-Indo-European *-tḗr Proto-Indo-European *-trom Proto-Hellenic *-tron Ancient Greek -τρον (-tron) Ancient Greek μέτρον (métron) Ancient Greek διάμετρος (diámetros)bor. Latin diametros Old French diametre English diameter 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.

"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:

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CEFR Practice Quiz
The pizza's ____ was exactly thirty centimeters, as the box stated.
CEFR Practice Quiz (Alternate)
The pond is 100 meters in ____.

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