radius

• n. 半径、半径の範囲; [解剖学的]半径; 放射光線; 有効範囲
• n. （半径）人名；（イタリア語、インドネシア語）Radius；（英語）Radius；（フランス語）Radiyus

rad-、半径、根、-us、男性的な文字。

radius (n.)

1590s, "cross-shaft," from Latin radius "staff, stake, rod; spoke of a wheel; ray of light, beam of light; radius of a circle," of unknown origin. Perhaps related to radix "root," but Tucker suggests connection to Sanskrit vardhate "rises, makes grow," via root *neredh- "rise, out, extend forth;" or else Greek ardis "sharp point."

The geometric sense first recorded 1610s. Plural is radii. Meaning "circular area of defined distance around some place" is attested from 1953. Meaning "shorter bone of the forearm" is from 1610s in English (the Latin word had been used thus by the Romans).

1. Nigel has searched for work in a ten-mile radius around his home.

ナイジェルは彼の家の周り10マイルの範囲で仕事を探していた。

2.They deliver to within a 5-mile radius of the store.

彼らはデパートから5マイルの範囲で宅配便を配達している。

3.He has visited every shop within a radius of two miles.

周囲2マイル以内の店舗に行ったことがある。

4.We are measuring the radius of the circle.

円の半径を測定しています。

5.A special load balancing server designed for solving this problem can manage multi RADIUS servers.

は、各サーバの負荷が均等になるように複数の RADIUS サーバをスケジューリングする専用の負荷バランシングサーバを設計した。