Define nadir. nadir synonyms, nadir pronunciation, nadir translation, English dictionary definition of nadir. 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...
Annular tear â definition and causes. By Michael Perry, M.D. An annular tear is one of the most common degenerative spine conditions that develop with the natural aging process of the spine. In fact, many people over the age of 50 have an annular tear and never know it.
Annular lesions are extremely common and striking in appearance but can also be misleading. The term âannularâ stems from the Latin word âannulus,â meaning ringed. 1 The lesions appear as circular or ovoid macules or patches with an erythematous periphery and central clearing.he condition is considered benign and is characterized by smooth, skin-colored annular plaques and papules. 1 The lesions are usually found on the hands, feet, wrists and ankles but can potentially occur anywhere on the body.