focal point

SEE SYNONYMS FOR focal point ON THESAURUS.COM

noun

Also called principal focus. Optics. either of two points on the axis of a mirror, lens, or other optical system, one point being such that rays diverging from it are deviated parallel to the axis upon refraction or reflection by the system and the other point being such that rays parallel to the axis of the system converge to the point upon refraction or reflection by the system.

the point at which all elements or aspects converge; center of activity or attention: The focal point of our discussion was the need for action.

the central or principal point of focus.

Origin of focal point

First recorded in 1705–15

Words nearby focal point

focalize, focal length, focal necrosis, focal plane, focal-plane shutter, focal point, focal ratio, focal reaction, focal segmental glomerulosclerosis, focal seizure, focal seizure disorder

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for focal point

We are at the focal-point of the present battle in Foureaux Wood (near Guillemont).
Now It Can Be Told|Philip Gibbs

British Dictionary definitions for focal point

focal point

noun

Also called: principal focus, focus the point on the axis of a lens or mirror to which parallel rays of light converge or from which they appear to diverge after refraction or reflection

a central point of attention or interest

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for focal point

focal point

n.

focus

Scientific definitions for focal point

focal point

The point at which all radiation coming from a single direction and passing through a lens or striking a mirror converges. Also called focus

单词	focal point
释义	focal point SEE SYNONYMS FOR focal point ON THESAURUS.COM noun Also called principal focus. Optics. either of two points on the axis of a mirror, lens, or other optical system, one point being such that rays diverging from it are deviated parallel to the axis upon refraction or reflection by the system and the other point being such that rays parallel to the axis of the system converge to the point upon refraction or reflection by the system. the point at which all elements or aspects converge; center of activity or attention: The focal point of our discussion was the need for action. the central or principal point of focus. Origin of focal point First recorded in 1705–15 Words nearby focal point focalize, focal length, focal necrosis, focal plane, focal-plane shutter, focal point, focal ratio, focal reaction, focal segmental glomerulosclerosis, focal seizure, focal seizure disorder Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for focal point We are at the focal-point of the present battle in Foureaux Wood (near Guillemont). Now It Can Be Told\|Philip Gibbs British Dictionary definitions for focal point focal point noun Also called: principal focus, focus the point on the axis of a lens or mirror to which parallel rays of light converge or from which they appear to diverge after refraction or reflection a central point of attention or interest Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Words related to focal point centerpiece, prime focus Medical definitions for focal point focal point n. focus The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for focal point focal point The point at which all radiation coming from a single direction and passing through a lens or striking a mirror converges. Also called focus The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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focal point

noun

Origin of focal point

Words nearby focal point

Example sentences from the Web for focal point

British Dictionary definitions for focal point

noun

Words related to focal point

Medical definitions for focal point

n.

Scientific definitions for focal point