OLD a.
s of the Carboniferous age and comprising various strata of siliceous sandstones and conglomerates. See Sandstone, and the Chart of Geology. -- Old school, a school or party belonging to a former time, or preserving the character, manner, or opinious of a former time; as, a gentleman of the old school; -- used also ad…
ORDINARY n.
A dining room or eating house where a meal is prepared for all comers, at a fixed price for the meal, in distinction from one where each dish is separately charged; a table d'hôte; hence, also, the meal furnished at such a dining room. Shak. All the odd words they have picked up in a coffeehouse, or a gaming ordinary,…
ORTHO- n.
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.
PARA- n.
m, that to the name of which it is prefixed; as paraldehyde, paraconine, etc.; also, an isomeric modification. (b) Specifically: (Organ. Chem.) That two groups or radicals substituted in the benzene nucleus are opposite, or in the respective positions 1 and 4; 2 and 5; or 3 and 6, as paraxylene; paroxybenzoic acid. Cf.…