During this period, African Americans lost many civil rights gained during Reconstruction. Synonyms: bedrock, bottom, depth… Antonyms: acme, apex, climax… Find the right word. The nadir may refer, for example, to the lowest blood count after chemotherapy or the lowest concentration of a drug in the body. The PSA nadir is the absolute lowest level that the PSA drops after treatment. SINCE 1828. nadir Has Arabic Roots nadir … 2. [Middle English, from Medieval Latin, from Arabic naẓīr (as-samt), opposite (the zenith), from naẓara, to see, watch; see nṯ̣r in Semitic roots.] The nadir (/ ˈ n eɪ d ɪər /, also UK: / ˈ n æ d ɪər /), (from Arabic: نظير / ALA-LC: naẓīr, meaning "counterpart") is the direction pointing directly below a particular location; that is, it is one of two vertical directions at a specified location, orthogonal to a horizontal flat surface there.
Astronomy A point on the celestial sphere directly below the observer, diametrically opposite the zenith. See more. It should be carefully distinguished from the imum coeli, which is the point directly opposite the midheaven. Find another word for nadir. Arabic] 1. nadir definition: 1. the worst moment, or the moment of least hope and least achievement: 2. the point at which…. the point on the celestial sphere directly beneath a given position or observer and diametrically opposite thezenith.. 2.Astrology . Nadir Affects Blood Cell and Platelet Counts. Nadir: The lowest point. Definition of Nadir. NADIR is listed in the World's largest and most authoritative dictionary database of abbreviations and acronyms NADIR is listed in the World's largest and most authoritative dictionary database of abbreviations and acronyms
Online Medical Dictionary and glossary with medical definitions, n listing. Medical Author: William C. Shiel Jr., MD, FACP, FACR; home > nadir Nadir: The lowest point. nadir definition: The definition of a nadir is the lowest point. Nadir derives from an Arabic word meaning "opposite"—the opposite, that is, of the zenith, or the highest point of the celestial sphere, the one vertically above the observer. The lowest point: the nadir of their fortunes. Nadir is part of the galaxy of scientific words that have come to us from Arabic, a language that has made important contributions in the vocabulary of mathematics, astronomy, medicine, and chemistry. As far as I know, in medical terms, nadir has more than one meaning. Nadir also refers to the downward-facing viewing geometry of an orbiting satellite, such as is employed during remote sensing of the atmosphere, as well as when an astronaut faces the Earth while performing a spacewalk. Although multiple prior studies have suggested that neurocognitive impairment tracks with nadir, rather than current CD4 cell count, these studies were small and therefore of limited generalizability, or were done in cohorts with limited neurocognitive and medical assessments, such that confounding factors could not be carefully evaluated [1-3]. 2. SAVED WORDS dictionary … A low point in any measurement. (nā′dĕr) [ME. dir (nā′dər, -dîr′) n. 1. These effects particularly occur on normal cells that divide rapidly such as, the hair, the lining of the … PSA is a protein produced in the prostate.
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