Semilunar conjunctival fold
semilunar conjunctival fold n.
The crescent-shaped fold formed by the palpebral conjunctiva at the medial angle of the eye.
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- Semilunar ganglion
semilunar ganglion n. See trigeminal ganglion. See celiac ganglion.
- Semilunar line
semilunar line n. The slight groove in the external abdominal wall parallel to the lateral edge of the rectus sheath. Also called Spigelius line.
- Semilunar-valve
noun, Anatomy. 1. either of two valves, one in the aorta and one in the pulmonary artery, consisting of a set of three crescent-shaped flaps of tissue and serving to prevent blood from flowing back into the heart after contraction. semilunar valve noun 1. (anatomy) either of two crescent-shaped valves, one in the aorta and […]
- Semi-luxury
noun, plural luxuries. 1. a material object, service, etc., conducive to sumptuous living, usually a delicacy, elegance, or refinement of living rather than a necessity: Gold cufflinks were a luxury not allowed for in his budget. 2. free or habitual indulgence in or enjoyment of comforts and pleasures in addition to those necessary for a […]
- Semimajor-axis
[sem-ee-mey-jer, sem-ahy-, sem-ee-, sem-ahy-] /ˈsɛm iˈmeɪ dʒər, ˈsɛm aɪ-, ˌsɛm i-, ˌsɛm aɪ-/ noun 1. Geometry. one half the major axis of an ellipse. 2. Astronomy. one half the major axis of the ellipse that one celestial body describes around another, as a planet around the sun or a satellite around a planet, equivalent to […]