roche lobe

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. {{lb|en|astronomy}} The [[teardrop]]-shaped region around a [[star]] in a [[binary system]] within which [[orbit]]ing material is [[gravitationally]] [[bind|bound]] to that [[star]].
2. {{lb|en|astronomy|by [[extension]]}} Around any two [[astronomic]] [[w:entity|entities]] in a "[[binary system]]", a [[teardrop]]-shaped region, within which [[orbit]]ing material is [[gravitationally]] [[bind|bound]] to that [[entity]].

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