theory
Translation
theory, hypothesis, supposition
Examples
He developed a new theory about gravity.
He developed a new theory about gravity.
In theory, this plan should work.
In theory, this plan should work.
Grammar Patterns
a theory ((about/on sth.)) a set of ideas intended to explain something He has a theory about why people get sick.
in theory used to say what is supposed to be true In theory, the machine should last for ten years.
Similar Words
Synonyms: hypothesis, principle, concept; Antonyms: practice, fact
Etymology
From Greek 'theoria', meaning 'contemplation, speculation', from 'theoros' (spectator). It's about 'viewing' a subject.
Memory Tips
Think of a 'theater' where you watch a play. A 'theory' is like a mental 'view' of how something works.