Also called blind spot. an area in which radio or cell phone signals are weak and their reception poor.
Definition for dead-spot (2 of 2)
Anatomy. a small area on the retina that is insensitive to light due to the interruption, where the optic nerve joins the retina, of the normal pattern of light-sensitive rods and cones.
an area or subject about which one is uninformed, prejudiced, or unappreciative: I confess that operettas are my blind spot.
Also called dead spot. any part of an auditorium, arena, or the like, in which a person is unable to see or hear satisfactorily.
an area to the side and slightly behind a driver's field of vision that is not reflected in the vehicle's rearview mirror.
Origin of blind spot
First recorded in 1860–65
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for dead-spot
a small oval-shaped area of the retina in which vision is not experienced. It marks the nonphotosensitive site of entrance into the eyeball of the optic nerveSee optic disc
a place or area, as in an auditorium or part of a road, where vision is completely or partially obscured or hearing is difficult or impossible
a subject about which a person is ignorant or prejudiced, or an occupation in which he or she is inefficient
a location within the normal range of a radio transmitter with weak reception
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
Word Origin and History for dead-spot
1864, "spot within one's range of vision where yet one cannot see." Of flaws in the eye, from 1872; figurative sense in use by 1907.
Online Etymology Dictionary, © 2010 Douglas Harper
Medicine definitions for dead-spot
The area of blindness in the visual field corresponding to the optic disk.physiologic scotoma punctum cecum
An area or facet of one's personality of which one remains ignorant or fails to gain understanding.mental scotoma scotoma
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Science definitions for dead-spot
The small region of the retina where fibers of the optic nerve emerge from the eyeball. The blind spot has no rods or cones, so no light or visual image can be transmitted.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Culture definitions for dead-spot
A small region in the visual field (the area scanned by the eye) that cannot be seen. The blind spot corresponds to an area in the eye where the optic nerve enters the retina.
In a general sense, the term is used to refer to an inability to see things that might be obvious to another observer: “He has a blind spot as far as his daughter's behavior is concerned.”
The New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Idioms and Phrases with dead-spot
Subject about which one is ignorant or biased. For example, The boss has a blind spot about Henry; he wouldn't fire him for anything, or Dad has a blind spot about opera; he can't see anything good about it. This term uses blind in the sense of “covered or hidden from sight.” It has two literal meanings: an insensitive part of the retina and an area outside one's field of vision. The phrase has largely replaced blind side, which survives mainly in the verb to blindside, meaning “to hit someone on an unguarded side” and “to deal an unexpected blow.” [Mid-1800s]
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.