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['ɵiəri]
o học thuyết, lý thuyết (nhằm giải thích sự việc hoặc sự kiện)
§ Darwin's theory of evolution : thuyết tiến hoá của Đác-uyn
o thuyết (ý kiến hoặc giả định, không nhất thiết dựa trên sự lập luận)
§ he has a theory that wearing hats makes men go bald : anh ta có cái thuyết cho rằng đội mũ làm cho đàn ông hói đầu
§ there's a theory that the lung cancer is caused by cigarettes : có thuyết cho là bệnh ung thư phổi do thuốc lá gây nên
o ý kiến, giả định (nói chung)
§ in theory, three things could happen : về lý thuyết, có ba khả năng có thể xảy ra
o lý thuyết, lý luận, nguyên lý (những nguyên tắc làm cơ sở cho một môn học)
§ good in theory but inapplicable in practice : hay về lý thuyết nhưng không áp dụng được trong thực hành
§ anticlinal theory : thuyết nếp lồi
§ cascode theory : thuyết phân bậc
§ expansion theory : thuyết dãn nở
§ inorganic theory : thuyết vô cơ (nguồn gốc dầu khí)
§ kinetic theory of gases : thuyết động học của khí
§ mineral theory : thuyết khoáng chất
§ nonownership theory : thuyết phi quyền sở hữu
§ organic theory : thuyết hữu cơ (nguồn gốc dầu khí)
§ qualified ownership theory : thuyết quyền sở hữu tư cách
§ replacement theory : thuyết thay thế (dịch chuyển dầu thô ra khỏi đá mẹ do tác dụng của nước)
§ shrinkage theory : thuyết co rút, thuyết co giảm (dầu khí)
§ terrestrial vegetation theory : thuyết thực vật (nguồn gốc dầu khí)
§ transmutation theory : thuyết biến hóa (địa chất)
§ theory of aggregates : thuyết khối tập, thuyết kết tụ
Word families (Nouns, Verbs, Adjectives, Adverbs): theorist, theory, theorem, theorize, theoretical, theoretically
Xem thêm: hypothesis, possibility
theory noun
ADJ. complete | partial | general Einstein's general theory of relativity | coherent | unified the existence of a grand unified theory that determines everything in the universe | current, new | classical the classical theory of gravity | pet One of her pet theories is that people who restrict their calorie intake live longer. | conflicting | critical | abstract His comments are just abstract theory and show little understanding of the realities of the situation. | economic, legal, linguistic, literary, political, scientific, social, etc. | post-modernist, structuralist, etc. Current feminist theory consists of several different trends. | conspiracy a conspiracy theory about the princess's death | chaos, game, quantum, number, particle, probability, relativity, etc.
QUANT. set Each school has its own set of theories.
VERB + THEORY have, hold | advance, develop, formulate, produce, propose | work on Police are working on the theory that the murderer was known to the family. | refute | confirm, prove | disprove | challenge, test
THEORY + VERB evolve | hold sth, suggest sth
PREP. in ~ In theory, these machines should last for ten years. | ~ about He has a theory about why dogs walk round in circles before going to sleep.
PHRASES theory and practice the distinction/relationship between theory and practice
n.
theories can incorporate facts and laws and tested hypotheses
true in fact and theory
a scientific hypothesis that survives experimental testing becomes a scientific theory
he proposed a fresh theory of alkalis that later was accepted in chemical practices
the architect has a theory that more is less
they killed him on the theory that dead men tell no tales