from The Century Dictionary and Cyclopedia

  • n. Same as terrel.


Sorry, no etymologies found.


  • He placed a magnetized sphere, a "terrella" representing the Earth, inside a vacuum chamber, aimed a beam of electrons towards it and could see that they were steered by the magnetic field to the vicinity of its magnetic poles.

    The Brussels Journal - The Voice of Conservatism in Europe

  • In this work Gilbert describes many of his experiments with his model earth called the terrella.

    Archive 2009-03-01

  • Swift had visited the Royal Society where he would have seen the Gilbertian terrella described in the catalogue as “an orbicular loadstone, about four inches and 1/2 in Diameter.”


  • By physical laws man knows but cannot control, microcosm and macro - cosm are combined: the terrella is “prodigious” as a magnet, yet it is a small power to govern the Flying


  • To this round loadstone he gave the name of terrella -- that is, little earth.

    A History of Science: in Five Volumes. Volume II: The Beginnings of Modern Science

  • Then move the middle or centre of the wire to another spot, and so to a third and fourth, always marking the stone along the length of the wire where it stands still; the lines so marked will exhibit meridian circles, or circles like meridians, on the stone or terrella; and manifestly they will all come together at the poles of the stone.

    A History of Science: in Five Volumes. Volume II: The Beginnings of Modern Science

  • Gilbert set great store by his invention of the terrella, since it led him to propound the true theory of the mariners 'compass.

    Diary of Samuel Pepys — Complete 1663 N.S.

  • In the Galileo Museum in Florence there is a terrella twenty-seven inches in diameter, of loadstone from Elba, constructed for Cosmo de 'Medici.

    Diary of Samuel Pepys — Volume 24: September/October 1663

  • The Expts. were made with two Loadstone, one a terrella the other of an Irregular figure and some steel dust being scatterd about them there appeard vpon the different position of the Later in Respect of the former, different and odde postures in the said Dust. mr Hooke was orderd to describe these postures in Schemes and to bring it into the Society

    Pepys' Diary

  • Evelyn was shown "a pretty terrella described with all ye circles and skewing all y magnetic deviations" (Diary, July 3rd, 1655).] which I had hoped he had sent me, but to my trouble I find it is to present from him to my Lord Sandwich, but I will make a little use of it first, and then give it him.

    Diary of Samuel Pepys — Volume 24: September/October 1663


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