librate

From Medieval Latin lībrāta, from Latin lībra (“pound”).

librate (plural librates)

1. (now historical) A piece of land having a value of one pound per year.

A librating molecule.

From the participle stem of Latin lībrāre, from lībra (“a balance”).

librate (third-person singular simple present librates, present participle librating, simple past and past participle librated)

1. (intransitive) To oscillate (like the beam of a balance).
   • 2002 October 18, S. J. Peale, Man Hoi Lee, “A Primordial Origin of the Laplace Relation Among the Galilean Satellites”, in Science, volume 298, number 5593, →DOI, page 594:

     The currently observed orbital resonances at the 2:1 mean motion commensurabilities involving Io-Europa and Europa-Ganymede are such that the resonance variables ${\displaystyle \theta _{1}=\lambda _{1}-2\lambda _{2}+\omega _{1}}$ and ${\displaystyle \theta _{3}=\lambda _{2}-2\lambda _{3}+\omega _{2}}$ librate about 0° and ${\displaystyle \theta _{2}=\lambda _{1}-2\lambda _{2}+\omega _{2}}$ librates about 180°, all with small amplitude.

   • 1796, William Cliffton, The Group:

     Their parts all librate on too nice a beam.

2. (intransitive) To be poised; to balance oneself.
   • 1791, Erasmus Darwin, The Economy of Vegetation, J. Johnson, page 138:

     Her playful Sea-horse […] His watery way with waving volutes wins, / Or listening librates on unmoving fins.

3. (obsolete, transitive) To place in a balance; to weigh.

• libration

• OED 2nd edition 1989

• altbier, betrail, tablier, triable, trilabe

librate

1. inflection of librarsi:
   1. second-person plural present indicative
   2. second-person plural imperative

librate f pl

1. feminine plural of librato

• blateri, libertà, retabli, ribalte, tribale

lībrāte

1. vocative masculine singular of lībrātus

• “librate”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press

librate

1. second-person singular voseo imperative of librar combined with te