libration

Fetched 2026-10-26 (cache).

Synonyms: liberation, vibration, libation, fibration, cibation, migration, ligation, librarian, lineation, miration, calibration

Antonyms: liberation, vibration, libation, fibration, cibation, migration, ligation, librarian, lineation, miration, calibration

Related words from Datamuse; suggestions, not definitions.

Noun

1. The act of [[librate|librating]].
2. {{lb|en|astronomy}} The [[apparent]] [[wobble]] or [[variation]] in the [[visible]] side of the [[Moon]] that [[permanently]] faces the [[Earth]], allowing [[observer]]s on Earth to see, over a period of time, [[slightly]] more than [[half]] of the [[lunar]] [[surface]].
3. {{lb|en|by extension}} A similar [[rotational]] or [[orbital]] characteristic of some other [[celestial]] body.
4. {{lb|en|[[dynamics]]}} The [[oscillation]] of an [[angle]] about a [[stable equilibrium]] point.<ref>{{cite-web |first=Alessandro |last=Morbidelli |year=2002 |url=https://www.semanticscholar.org/paper/Modern-celestial-mechanics-%3A-aspects-of-solar-Morbidelli/05a1b074f5d84e53f88497adeac003e94cd7427f |work=Modern celestial mechanics: aspects of solar system dynamics |page=73}}</ref>
5. {{lb|en|chemistry}} A vibrational degree of freedom whereby a group of atoms partly rotates back and forth, similar to the Moon's motion.
6. {{lb|en|figuratively}} A [[waver]]ing between two [[opposing]] [[thought]]s or [[choice]]s.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.