a network of fine lines, wires, or the like placed in the focus of the eyepiece of an optical instrument.
a network of fine lines, wires, etc, placed in the focal plane of an optical instrument to assist measurement of the size or position of objects under observation Also called graticule
reticul- pref. Variant of reticulo-.
noun, plural reticula [ri-tik-yuh-luh] /rɪˈtɪk yə lə/ (Show IPA), for 1–3, genitive reticuli [ri-tik-yuh-lahy] /rɪˈtɪk yəˌlaɪ/ (Show IPA), for 4. 1. a network; any reticulated system or structure. 2. Anatomy. a network of intercellular fibers in certain tissues. a network of structures in the endoplasm or nucleus of certain cells. 3. Zoology. the second stomach […]
adjective 1. having the form of a net; netlike. 2. intricate or entangled. 3. Anatomy. of or relating to a reticulum. reticular re·tic·u·lar (rĭ-tĭk’yə-lər) or re·tic·u·lat·ed (-lā’tĭd) adj. Resembling a net in form; netlike. re·tic’u·la’tion n.
- Reticular activating system
reticular activating system n. Abbr. RAS The part of the reticular formation in the brainstem that plays a central role in bodily and behavioral alertness; its ascending connections affect the function of the cerebral cortex and its descending connections affect bodily posture and reflex mechanisms.