(n) the brightest star in Ursa Minor; at the end of the handle of the Little Dipper; the northern axis of the earth points toward it, Syn.North Star, pole star, polestar, polar star
(n) having an indicated pole (as the distinction between positive and negative electric charges), Syn.sign, Example: he got the polarity of the battery reversed; charges of opposite sign
n. [ Polar + -meter. ] (Opt.) An instrument for determining the amount of polarization of light, or the proportion of polarized light, in a partially polarized ray. [ 1913 Webster ]
n. [ Polar + -scope. ] (Opt.) An instrument consisting essentially of a polarizer and an analyzer, used for polarizing light, and analyzing its properties. [ 1913 Webster ]
a. Pertaining to, or exhibiting, poles; having a polar arrangement or disposition; arising from, or dependent upon, the possession of poles or polar characteristics; as, polaristic antagonism. [ 1913 Webster ]
n. [ Cf. F. polarité. ] 1. (Physics) That quality or condition of a body in virtue of which it exhibits opposite, or contrasted, properties or powers, in opposite, or contrasted, parts or directions; or a condition giving rise to a contrast of properties corresponding to a contrast of positions, as, for example, attraction and repulsion in the opposite parts of a magnet, the dissimilar phenomena corresponding to the different sides of a polarized ray of light, etc. [ 1913 Webster ]
2. (Geom.) A property of the conic sections by virtue of which a given point determines a corresponding right line and a given right line determines a corresponding point. See Polar, n. [ 1913 Webster ]
แสดงได้ทั้งความหมายของคำเดี่ยว และคำผสม ได้อย่างถูกต้อง
เช่น Secretary of State=รัฐมนตรีต่างประเทศของสหรัฐฯ (ในภาพตัวอย่าง),
High school=โรงเรียนมัธยมปลาย
