{ . [ L. octo eight, Gr. 'oktw`, with a combining form 'okta-. Cf. Eight. ] A combining form meaning eight; as in octodecimal, octolocular. [ 1913 Webster ]
n. [ Gr. &unr_; with eight strings; 'okta- (for 'oktw` eight) + &unr_; string, chord: cf. F. octacorde. ] (Mus.) An instrument of eight strings; a system of eight tones. [ Also written octochord. ] [ 1913 Webster ]
n. [ Gr. &unr_; eight-cornered; 'okta- (for 'oktw` eight) + &unr_; an angle: cf. F. cctogone. ] 1. (Geom.) A plane figure of eight sides and eight angles. [ 1913 Webster ]
2. Any structure (as a fortification) or place with eight sides or angles. [ 1913 Webster ]
Regular octagon, one in which the sides are all equal, and the angles also are all equal. [ 1913 Webster ]
a. [ See octahedron. ] Having eight faces or sides; of, pertaining to, or formed in, octahedrons; as, octahedral cleavage; an octahedral crystal. [ 1913 Webster ]
octahedral borax (Chem.), borax obtained from a saturated solution in octahedral crystals, which contain five molecules of water of crystallization; distinguished from common or prismatic borax. -- Octahedral iron ore (Min.), magnetite. [ 1913 Webster ]
แสดงได้ทั้งความหมายของคำเดี่ยว และคำผสม ได้อย่างถูกต้อง
เช่น Secretary of State=รัฐมนตรีต่างประเทศของสหรัฐฯ (ในภาพตัวอย่าง),
High school=โรงเรียนมัธยมปลาย
