The Clue
An ellipse has two (4 letter answer)
The Answer
FOCI
Tags
Notes
The answer FOCI is uncommon, appearing about once every 400 puzzles.
Related Clues
Hubs
Centers of activity
Centers of attention
Centers of attraction
Centers of circles
Centers; hubs
Central points
Convergence points
Converging points
Geometry points
Meeting points
Origins of earthquakes
Pair in an ellipse
Points of convergence
Primary points
Earthquakes' points of origin
A hyperbola has two
An ellipse has two of them
Places where lines meet
Points that may have rays
Definition
FOCUS as a noun:
1. (focus, focusing, focussing, focal point, direction, centering) = the concentration of attention or energy on something; "the focus of activity shifted to molecular biology"; "he had no direction in his life"
2. maximum clarity or distinctness of an image rendered by an optical system; "in focus"; "out of focus"
3. maximum clarity or distinctness of an idea; "the controversy brought clearly into focus an important difference of opinion"
4. (focus, focal point, nidus) = a central point or locus of an infection in an organism; "the focus of infection"
5. (stress, focus) = special emphasis attached to something; "the stress was more on accuracy than on speed"
6. (focus, focal point) = a point of convergence of light (or other radiation) or a point from which it diverges
7. a fixed reference point on the concave side of a conic section