polyhedron
/ˌpɒlɪˈhiːdɹən/ noun
Forms polyhedra polyhedrons polyedron
- noun (geometry) A solid figure with many flat faces and straight edges.
- noun (optics) A polyscope, or multiplying glass.
- noun (botany) A stage in the growth of Hydrodictyon, when the resting spore breaks up into several megazoospores that put out horn-like appendages; these polyhedra break up into zoospores.
Etymology
From New Latin polyedron, from Ancient Greek πολύεδρος (polúedros, “having many seats”), from πολυ- (polu-, “many”) + ἕδρα (hédra, “seat”); compare French polyèdre. By surface analysis, poly- + -hedron.
Webster’s 1913
Etymology [NL., fr. Gr. polyèdre.]
Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “polyhedron”, CC BY-SA 4.0. Details