- a principle.
Origin of principium
Related Words for principiaregulation, proposal, rule, ethic, foundation, doctrine, basis, truth, proposition, precept, assumption, fundamental, convention, axiom, component, element, principle, factor, law, cornerstone
Examples from the Web for principia
Historical Examples of principia
All these discoveries were brought together in that immortal work, Newton's "Principia."Great Astronomers
R. S. Ball
Descartes' Principia and his Meditationes were written in Latin.A History of French Literature
When Newton heard of it he began the Principia, working in silence.
It was by this continuous application that the Principia was accomplished.
No sooner was the Principia put than Hooke put in his claims for priority.
- (usually plural) a principle, esp a fundamental one
Word Origin for principium
"fundamental principles," plural of Latin principium "beginning, origin" (see principle (n.)). Especially as the short form of the title of Newton's book (published 1687).