Definitions for focal point
Random House Webster's College Dictionary
fo′cal point`(n.)
either of two points on the axis of a mirror, lens, or other optical system, on which rays converge or from which they deviate.
Category: Optics
the center of activity or attention.
the central or principal point of focus.
Origin of focal point:
1705–15
Princeton's WordNet
focus, focal point(noun)
a point of convergence of light (or other radiation) or a point from which it diverges
focus, focal point, nidus(noun)
a central point or locus of an infection in an organism
"the focus of infection"
focus, focusing, focussing, focal point, direction, centering(noun)
the concentration of attention or energy on something
"the focus of activity shifted to molecular biology"; "he had no direction in his life"
Wiktionary
focal point(Noun)
A focus; a point at which rays of light or other radiation converge
focal point(Noun)
The centre of any activity
focal point(Noun)
A feature that attracts particular attention.
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