(a) Anat. Any hollow or concave part, such as a cavity (of the womb), canal (of the ear), recess (of a wound), sinus (of the liver); (b) Astron. the surface of a celestial sphere. …

(a) Clear, unclouded; bright, reflecting light; (b) astron. heven cristallin, cristallin heven, the crystalline sphere, a clear heaven variously placed by various astronomers; (c) anat. cristallin……

The foundation or substructure of a building. …

(a) A location or placement opposite something; (b) a contradiction, contrary opinion or purpose; a reply to a deposition; (c) a formal oral examination; (d) an antidote or remedy; (e) astron. & astro……