Vocabulary : Orsellic to Orthocenter

Orsellic : Pertaining to, or designating, an acid found in certain lichens, and called also lecanoric acid.
Orsellinic : Pertaining to, or designating, an organic acid obtained by a partial decomposition of orsellic acid as a white crystalline substance, and related to protocatechuic acid.
Ort : A morsel left at a meal; a fragment; refuse; -- commonly used in the plural.
Ortalidian : Any one of numerous small two-winged flies of the family Ortalidae. The larvae of many of these flies live in fruit; those of others produce galls on various plants.
Orthid : A brachiopod shell of the genus Orthis, and allied genera, of the family Orthidae.

Orthis : An extinct genus of Brachiopoda, abundant in the Paleozoic rocks.
Orthite : A variety of allanite occurring in slender prismatic crystals.
Ortho- : A combining form signifying straight, right, upright, correct, regular; as, orthodromy, orthodiagonal, orthodox, orthographic. ;; A combining form (also used adjectively) ;; The one of several acids of the same element (as the phosphoric acids), which actually occurs with the greatest number of hydroxyl groups; as, orthophosphoric acid. Cf. Normal. ;; Connection with, or affinity to, one variety of isomerism, characteristic of the benzene compounds; -- contrasted with meta- or para-; as, the ortho position; hence, designating any substance showing such isomerism; as, an ortho compound.
Orthocarbonic : Designating a complex ether, C.(OC2H5)4, which is obtained as a liquid of a pleasant ethereal odor by means of chlorpicrin, and is believed to be a derivative of the hypothetical normal carbonic acid, C.(OH)4.
Orthocenter : That point in which the three perpendiculars let fall from the angles of a triangle upon the opposite sides, or the sides produced, mutually intersect.

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