PORPHYRITIC a.
Relating to, or resembling, porphyry, that is, characterized by the presence of distinct crystals, as of feldspar, quartz, or augite, in a relatively fine-grained base, often aphanitic or cryptocrystalline.
PRAIRIE n.
ract of level or rolling land, destitute of trees, covered with coarse grass, and usually characterized by a deep, fertile soil. They abound throughout the Mississippi valley, between the Alleghanies and the Rocky mountains. From the forests and the prairies, From the great lakes of the northland. Longfellow.…
PRIMARY a.
Illustrating, possessing, or characterized by, some quality or property in the first degree; having undergone the first stage of substitution or replacement. Primary alcohol (Organic Chem.), any alcohol which possess the group CH2.OH, and can be oxidized so as to form a corresponding aldehyde and acid having the same n…
PRINCIPLE n.
Any original inherent constituent which characterizes a substance, or gives it its essential properties, and which can usually be separated by analysis; -- applied especially to drugs, plant extracts, etc. Cathartine is the bitter, purgative principle of senna. Gregory. Bitter principle, Principle of contradiction, etc…