Definition of radical axis
1 : a straight line that is the locus of points from which tangents drawn to two given circles are equal
2 : a straight line common to the three radical planes of three given spheres taken in pairs
Comments on radical axis
What made you want to look up radical axis? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Slippery Words Quiz—Changing with the Times
- What is an earlier meaning of nice?
Test your vocabulary with our 10-question quiz!
TAKE THE QUIZ
Anagram puzzles meet word search.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
- Slippery Words Quiz—Changing with the Times
Do you know these earlier meanings of words?
Take the quiz - Words of Snow and Ice Quiz
A selection of words from the chillier parts of t...
Take the quiz - How Strong Is Your Vocabulary?
Test your vocabulary with our 10-question quiz!
Take the quiz - SCRABBLE® Sprint
SCRABBLE® fans, sharpen your skills!
Play the game
Share radical axis