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radius

Pronunciación: /ˈreɪdɪəs/

Definición de radius

1a straight line from the centre to the circumference of a circle or sphere.
a radial line from the focus to any point of a curve.
a specified distance from a centre in all directions:there are plenty of local pubs within a two-mile radius

2 Anatomy the thicker and shorter of the two bones in the human forearm. Compare with ulna.
Zoology the bone in a vertebrate’s foreleg or a bird’s wing that corresponds to the radius in a human being.
Entomology any of the main veins in an insect’s wing.

3 Zoology a radially symmetric feature in an echinoderm or coelenterate, e.g. an arm of a starfish.

[with object] (often as adjective radiused)

Origin:

late 16th century (in sense 2 of the noun): from Latin, literally 'staff, spoke, ray'

The plural of radius can be spelled either radii (as in the original Latin) or radiuses.

Definición de radius en el diccionario de Inglés de EE.UU.

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