having only one eye.
of, relating to, or for the use of only one eye: a monocular microscope.
a monocular instrument or device.
Origin of monocular
1630–40;Related formsmo·noc·u·lar·ly, adverb
< Late Latin monocul(us
) one-eyed (see monocle
) + -ar1
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for monocular
Historical Examples of monocular
The little microscope was an excellent one, though only a monocular.
Nystagmus occasionally occurs in monocular fixation (with exclusion of the other eye).
These are the retinal field of vision, the monocular field, and the binocular field.
Even the doctor, himself a hardened man of the sea, showed a brilliant spark of emotion behind his monocular attic window.
Monocular, mon-ok′ū-lar, adj. with one eye only: fitted only for one eye at a time.
British Dictionary definitions for monocular
having to do with or using only one eye
Derived Formsmonocularly, adverb
a device for use with one eye, such as a field glass
Word Origin for monocular
C17: from Late Latin monoculus one-eyed
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 monocular
1630s, from Late Latin monoculus "one-eyed," from Greek monos "alone, single" (see mono-) + Latin oculus "eye" (see eye (n.)).
Online Etymology Dictionary, © 2010 Douglas Harper
Having or affecting one eye only.
Having a single eyepiece, as certain microscopes or other optical instruments.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.