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principia

  • plural
    of principium.
    principium
    noun
    a principle.

Example Sentences

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Fifty-five years later, Isaac Newton’s great work, Philosophiae naturalis principia mathematica, The Mathematical Principles of Natural Philosophy, further reinforced the coherence of the Copernican system, with laws of mechanics and gravity that reinforced the model.

From Forbes Sep. 18, 2014

At the crossroads, in front of the snow-brick principia, a tall, dark- robed figure stood, bound in icy chains.

From "The Son of Neptune" by Rick Riordan

Figures in Roman armor emerged from the barracks, the principia, the armory, and the canteen, but they weren’t human.

From "The Son of Neptune" by Rick Riordan

He stood in a theater-sized version of the camp’s headquarters—a principia with walls of ice and freezing mist hanging in the air.

From "The Son of Neptune" by Rick Riordan

The Fifth Cohort assembled at the very end, in front of the principia, since their barracks were tucked in the back corner of camp next to the stables and the latrines.

From "The Son of Neptune" by Rick Riordan