radius
|ra-di-us|
B1
/ˈreɪdiəs/
line from center
Etymology
Etymology Information
'radius' originates from Latin, specifically the word 'radius,' where it meant 'staff, spoke of a wheel, ray.'
Historical Evolution
'radius' has remained largely unchanged from its Latin origins, maintaining its meaning in modern English.
Meaning Changes
Initially, it meant 'staff or spoke of a wheel,' but over time it evolved to include the mathematical and anatomical meanings.
Meanings by Part of Speech
Noun 1
a straight line from the center to the circumference of a circle or sphere.
The radius of the circle is 5 cm.
Synonyms
Last updated: 2025/01/11 11:45