1. gravitational theory

noun. (physics) the theory that any two particles of matter attract one another with a force directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
Synonyms
Newton's theory of gravitation theory of gravitation scientific theory Newton's law of gravitation theory of gravity law of gravitation
Antonyms
wave theory wave theory of light corpuscular theory of light corpuscular theory

2. gravitational

adjective. (ˌgrævɪˈteɪʃənəl) Of or relating to or caused by gravitation.
Synonyms
gravitative

3. theory-based

adjective. Based in theory rather than experiment.
Synonyms
theoretic theoretical
Antonyms
empirical applied confirmable

4. M-theory

noun. (particle physics) a theory that involves an eleven-dimensional universe in which the weak and strong forces and gravity are unified and to which all the string theories belong.
Synonyms
model string theory theoretical account framework
Antonyms
follower unworthy

5. theory

noun. (ˈθɪri, ˈθiːɝi) A well-substantiated explanation of some aspect of the natural world; an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena.
Synonyms
hypothesis law atomic theory law of nature structuralism reductionism blastogenesis structural sociology possibility holistic theory economic theory scientific theory atomism atomistic theory structural anthropology theory of preformation field theory atomist theory explanation holism preformation
Antonyms
atomism holism wave theory wave theory of light corpuscular theory of light
Etymology
theory (English)
theoria (Latin)
θεωρία (Ancient Greek (to 1453))
θεωρέω (Ancient Greek (to 1453))
θεωρός (Ancient Greek (to 1453))

6. theory

noun. (ˈθɪri, ˈθiːɝi) A tentative insight into the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena.
Synonyms
supposition model assumption conception hypothetical historicism conjecture speculation possibility construct supposal hypothesis concept theoretical account framework gemmule
Antonyms
misconception civil law international law synthesis nonbeing
Etymology
theory (English)
theoria (Latin)
θεωρία (Ancient Greek (to 1453))
θεωρέω (Ancient Greek (to 1453))
θεωρός (Ancient Greek (to 1453))

7. theory

noun. (ˈθɪri, ˈθiːɝi) A belief that can guide behavior.
Synonyms
hodgepodge patchwork jumble egoism belief
Antonyms
unbelief nonexistence impossible possible impossibility
Etymology
theory (English)
theoria (Latin)
θεωρία (Ancient Greek (to 1453))
θεωρέω (Ancient Greek (to 1453))
θεωρός (Ancient Greek (to 1453))
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