in theory
— Adverb
– English
～ with regard to fundamentals although not concerning details; "in principle, we agree"
information theory
— Noun
– English
～ (computer science) a statistical theory dealing with the limits and efficiency of information processing
insulin shock therapy
— Noun
– English
～ the administration of sufficient insulin to induce convulsions and coma
infrared therapy
— Noun
– English
～ the use of infrared radiation (as by infrared lamps or heating pads or hot water bottles) to relieve pain and increase circulation to a particular area of the body
inflation therapy
— Noun
– English
～ therapy in which water or oxygen or a drug is introduced into the respiratory tract with inhaled air
implosion therapy
— Noun
– English
～ a technique used in behavior therapy; client is flooded with experiences of a particular kind until becoming either averse to them or numbed to them