nadir

[ ney-der, ney-deer ]
/ ˈneɪ dər, ˈneɪ dɪər /

noun

Astronomy. the point on the celestial sphere directly beneath a given position or observer and diametrically opposite the zenith.
Astrology. the point of a horoscope opposite the midheaven: the cusp of the fourth house.
the lowest point; point of greatest adversity or despair.

Words nearby nadir

Origin of nadir

1350–1400; Middle EnglishArabic naẓīr over against, opposite to (the zenith)

OTHER WORDS FROM nadir

na·dir·al, adjective

WORDS THAT MAY BE CONFUSED WITH nadir

nadir zenith
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for nadir

British Dictionary definitions for nadir

nadir
/ (ˈneɪdɪə, ˈnæ-) /

noun

the point on the celestial sphere directly below an observer and diametrically opposite the zenith
the lowest or deepest point; depthsthe nadir of despair

Word Origin for nadir

C14: from Old French, from Arabic nazīr as-samt, literally: opposite the zenith
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

Science definitions for nadir

nadir
[ nādər ]

The point on the celestial sphere that is directly below the observer (90 degrees below the celestial horizon). Compare zenith.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.