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|Orthis||(n.) An extinct genus of Brachiopoda, abundant in the ...|
|Orthite||(n.) A variety of allanite occurring in slender prismatic ...|
|Ortho-||A combining form signifying straight, right, upright, correct, regular; ...|
|Ortho-||A combining form (also used adjectively) ...|
|Ortho-||The one of several acids of the same element ...|
|Ortho-||Connection with, or affinity to, one variety of isomerism, ...|
|Orthocarbonic||(a.) Designating a complex ether, C.(OC2H5)4, which is obtained ...|
|Orthocenter||(n.) That point in which the three perpendiculars let ...|
|Orthoceras||(n.) An extinct genus of Paleozoic Cephalopoda, having a ...|
|Orthoceratite||(n.) An orthoceras; also, any fossil shell allied to ...|
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