نطق كلمة radius بالإنجليزية

"A right line drawn or extending from the center of a circle to the periphery; the semidiameter of a circle or sphere."

"The preaxial bone of the forearm or brachium corresponding to the tibia of the hind limb. See Illust. of Artiodactyla."

"A ray or outer floret of the capitulum of such plants as the sunflower and the daisy. See Ray 2."

"The barbs of a perfect feather."

"Radiating organs or color-markings of the radiates."

"The movable limb of a sextant or other angular instrument."