theory
Translation
theory, hypothesis, speculation
Examples
He has a theory about why the dinosaurs died.
He has a theory about why the dinosaurs died.
In theory, the plan should work perfectly.
In theory, the plan should work perfectly.
Grammar Patterns
a theory ((about/on sth.)) a set of ideas intended to explain something He has a theory about why the dinosaurs died.
Similar Words
Synonyms: hypothesis, concept, idea; Antonyms: fact, practice
Etymology
From Greek 'theōria' meaning 'contemplation, speculation'.
Memory Tips
Think of a 'theater' of ideas, where you watch a 'theory' play out on stage.