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2 ADJ [usu ADJ n] If you describe a situation as a theoretical one, you mean that although it is supposed to be true or to exist in the way stated, it may not in fact be true or exist in that way. □  This is certainly a theoretical risk but in practice there is seldom a problem.

theo|reti|cal|ly /θiː əre t I kəli/ ADV You use theoretically to say that although something is supposed to be true or to happen in the way stated, it may not in fact be true or happen in that way. □  Theoretically, the price is supposed to be marked on the shelf.

theo|reti|cian /θ I ə rət I ʃ ^ə n/ (theoreticians ) N‑COUNT A theoretician is the same as a theorist .

theo|rist /θiː ər I st/ (theorists ) N‑COUNT A theorist is someone who develops an abstract idea or set of ideas about a particular subject in order to explain it.

theo|rize /θiː əra I z/ (theorizes , theorizing , theorized ) in BRIT, also use theorise VERB If you theorize that something is true or theorize about it, you develop an abstract idea or set of ideas about something in order to explain it. □ [V that] Police are theorizing that the killers may be posing as hitchhikers. □ [V + about ] By studying the way people behave, we can theorize about what is going on in their mind. [Also V ] ●  theo|riz|ing N‑UNCOUNT □  This was no time for theorizing.

theo|ry ◆◆◇ /θ I ə ri/ (theories )

1 N‑VAR A theory is a formal idea or set of ideas that is intended to explain something. □ [+ of ] Einstein formulated the Theory of Relativity in 1905.

2 N‑COUNT If you have a theory about something, you have your own opinion about it which you cannot prove but which you think is true. □  There was a theory that he wanted to marry her.

3 N‑UNCOUNT The theory of a practical subject or skill is the set of rules and principles that form the basis of it. □  He taught us music theory. [Also + of ]

4 PHRASE You use in theory to say that although something is supposed to be true or to happen in the way stated, it may not in fact be true or happen in that way. □  A school dental service exists in theory, but in practice, there are few dentists to work in it. COLLOCATIONS theory NOUN 1

noun + theory : chaos, quantum, relativity; management

adjective + theory : economic, evolutionary, Marxist, political; classical, linguistic, literary, scientific

verb + theory : apply, develop, formulate, test; challenge, dismiss, disprove, reject; prove, support

thera|peu|tic /θe rəpjuː t I k/

1 ADJ If something is therapeutic , it helps you to relax or to feel better about things, especially about a situation that made you unhappy. □  Astanga Yoga is a therapeutic physical exercise that focuses on breathing and relaxation.

2 ADJ [usu ADJ n] Therapeutic treatment is designed to treat an illness or to improve a person's health, rather than to prevent an illness. [MEDICAL ] □  …therapeutic drugs.

thera|pist /θe rəp I st/ (therapists ) N‑COUNT A therapist is a person who is skilled in a particular type of therapy.

thera|py ◆◇◇ /θe rəpi/ (therapies )

1 N‑UNCOUNT Therapy is the treatment of someone with mental or physical illness without the use of drugs or operations. □  He is having therapy to conquer his phobia.

2 N‑VAR A therapy is a particular treatment of someone with a particular illness. [MEDICAL ] □  …hormonal therapies. □  …conventional drug therapy. SYNONYMS therapy NOUN 2

remedy:…natural remedies to help overcome winter infections.

treatment:Many patients are not getting the medical treatment they need.

cure:There is still no cure for a cold.