libratory, a.
(ˈlaɪbrətərɪ)
[f. L. lībrāt-, ppl. stem of lībrā-re to librate.]
Having a motion like that of the beam of a balance; oscillatory.
| 1668 Phil. Trans. III. 809 That there is a Libratory motion in Comets as well as in the Moon. 1801 Trans. Soc. Arts XIX. 257 The beam..acquired a libratory motion. 1804 C. B. Brown tr. Volney's View Soil U.S. 203 Just as the sea experiences a libratory motion, while its interior currents remain undisturbed. 1874 Edin. Rev. No. 285. 87 The libratory swaying to and fro of the moon. |