| 释义 |
nadir
na·dir N0002600 (nā′dər, -dîr′)n.1. Astronomy A point on the celestial sphere directly below the observer, diametrically opposite the zenith.2. The lowest point: the nadir of their fortunes.
[Middle English, from Medieval Latin, from Arabic naẓīr (as-samt), opposite (the zenith), from naẓara, to see, watch; see nṯ̣r in Semitic roots.]nadir (ˈneɪdɪə; ˈnæ-) n1. (Astronomy) the point on the celestial sphere directly below an observer and diametrically opposite the zenith2. the lowest or deepest point; depths: the nadir of despair. [C14: from Old French, from Arabic nazīr as-samt, literally: opposite the zenith]na•dir (ˈneɪ dər, -dɪər)
n. 1. the point on the celestial sphere directly beneath a given position or observer and diametrically opposite the zenith. 2. the lowest point; point of greatest adversity or despair. [1350–1400; Middle English « Arabic naẓīr over against, opposite to (the zenith)] na′dir•al, adj. na·dir (nā′dər) The point on the celestial sphere that is directly below the observer.zenith, nadir - Zenith derived from Arabic samt ar-ras, "the way or road above one's head"; zenith technically is the point directly above the observer and nadir is the point directly below.See also related terms for observer.Thesaurus| Noun | 1. | nadir - an extreme state of adversity; the lowest point of anythinglow-water markadversity, hard knocks, hardship - a state of misfortune or affliction; "debt-ridden farmers struggling with adversity"; "a life of hardship" | | 2. | nadir - the point below the observer that is directly opposite the zenith on the imaginary sphere against which celestial bodies appear to be projectedcelestial point - a point in the heavens (on the celestial sphere)celestial sphere, empyrean, firmament, heavens, vault of heaven, welkin, sphere - the apparent surface of the imaginary sphere on which celestial bodies appear to be projectedzenith - the point above the observer that is directly opposite the nadir on the imaginary sphere against which celestial bodies appear to be projected |
nadirnoun bottom, depths, lowest point, rock bottom, all-time low That period was the nadir of his presidency.
top, summit, height, peak, climax, crest, high point, pinnacle, zenith, apex, acmeTranslationsnadir
nadir (nā`dər) [Arab.,=opposite], in astronomy, the point on the celestial spherecelestial sphere,
imaginary sphere of infinite radius with the earth at its center. It is used for describing the positions and motions of stars and other objects. For these purposes, any astronomical object can be thought of as being located at the point where the line of sight
..... Click the link for more information. directly opposite the zenithzenith,
in astronomy, the point in the sky directly overhead; more precisely, it is the point at which the celestial sphere is intersected by an upward extension of a plumb line from the observer's location.
..... Click the link for more information. , i.e., directly beneath the observer.nadir (nay -deer) The point on the celestial sphere that lies directly beneath an observer and is therefore unobservable. It is diametrically opposite the observer's zenith and with the zenith lies on the observer's meridian.Nadir (religion, spiritualism, and occult)The nadir is the point in the heavens directly opposite the zenith, which means that it is the point in the heavens on the other side of Earth directly underneath one’s feet. It should be carefully distinguished from the imum coeli, which is the point directly opposite the midheaven. nadir[′nā·dər] (astronomy) That point on the celestial sphere vertically below the observer, or 180° from the zenith. (oceanography) The point on the sea floor that lies directly below the sonar during a survey. nadir That point on the celestial sphere directly beneath the observer and directly opposite the zenith (i.e., 180° from the zenith, so that the zenith, nadir, and the center of the earth are in one straight line). Also called a nadir point.nadir the point on the celestial sphere directly below an observer and diametrically opposite the zenith nadir
na·dir (nā'dēr), The lowest value of blood counts after chemotherapy. [M.E., Med. L., lowest point, fr. Arabic nazīr, opposite (the zenith)] na·dir (nā'dēr) The lowest value of blood counts after chemotherapy. [M.E., Med. L., lowest point, fr. Arabic nazīr, opposite (the zenith)]nadir (nā′dĕr) [ME. fm. Arabic] 1. A low point in any measurement. 2. The lowest concentration of blood cells (esp. white blood cells) found after taking a drug that suppresses the bone marrow. The term is usually used for the low blood cell counts that occur after cancer chemotherapy. When the absolute neutrophil count reaches a nadir below 1000 cells/mm3, the risk of life-threatening infections increases dramatically. NADIR
| Acronym | Definition |
|---|
| NADIR➣Network Anomaly Detection and Intrusion Reporter |
nadir
Synonyms for nadirnoun bottomSynonyms- bottom
- depths
- lowest point
- rock bottom
- all-time low
Antonyms- top
- summit
- height
- peak
- climax
- crest
- high point
- pinnacle
- zenith
- apex
- acme
Synonyms for nadirnoun an extreme state of adversitySynonymsRelated Words- adversity
- hard knocks
- hardship
noun the point below the observer that is directly opposite the zenith on the imaginary sphere against which celestial bodies appear to be projectedRelated Words- celestial point
- celestial sphere
- empyrean
- firmament
- heavens
- vault of heaven
- welkin
- sphere
Antonyms |