a. [ Gr. &unr_; shadow + &unr_; belonging to sight: cf. F. scioptique. See Optic. ] (Opt.) Of or pertaining to an optical arrangement for forming images in a darkened room, usually called scioptic ball. [ 1913 Webster ]
Scioptic ball (Opt.), the lens of a camera obscura mounted in a wooden ball which fits a socket in a window shutter so as to be readily turned, like the eye, to different parts of the landscape. [ 1913 Webster ]
n. The art or process of exhibiting luminous images, especially those of external objects, in a darkened room, by arrangements of lenses or mirrors. [ 1913 Webster ]
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เช่น Secretary of State=รัฐมนตรีต่างประเทศของสหรัฐฯ (ในภาพตัวอย่าง),
High school=โรงเรียนมัธยมปลาย
