Ancient Greek
Alternative forms
Noun
μέγεθος • (mégethos) m (genitive μεγέθεος); third declension
-  greatness, size
-  (always in Homer) height
-  (mathematics) magnitude
-  (sound) loudness
-  power
-  (character) magnanimity
 
Inflection
	Third declension of 
τὸ μέγεθος; 
τοῦ μεγέθεος (Uncontracted)
| Case / # | Singular | Dual | Plural | 
| Nominative | τὸ μέγεθος | τὼ μεγέθεε | τᾰ̀ μεγέθεᾰ | 
| Genitive | τοῦ μεγέθεος | τοῖν μεγεθέοιν | τῶν μεγεθέων | 
| Dative | τῷ μεγέθεῐ̈ | τοῖν μεγεθέοιν | τοῖς μεγέθεσῐ(ν) | 
| Accusative | τὸ μέγεθος | τὼ μεγέθεε | τᾰ̀ μεγέθεᾰ | 
| Vocative | μέγεθος | μεγέθεε | μεγέθεᾰ | 
| Notes: | This table gives Attic inflectional endings. For declension in dialects other than Attic, see Appendix:Ancient Greek dialectal declension. | 
 
 
	Third declension of 
τὸ μέγεθος; 
τοῦ μεγέθους (Contracted)
| Case / # | Singular | Dual | Plural | 
| Nominative | τὸ μέγεθος | τὼ μεγέθει | τᾰ̀ μεγέθη | 
| Genitive | τοῦ μεγέθους | τοῖν μεγεθοῖν | τῶν μεγεθῶν | 
| Dative | τῷ μεγέθει | τοῖν μεγεθοῖν | τοῖς μεγέθεσῐ(ν) | 
| Accusative | τὸ μέγεθος | τὼ μεγέθει | τᾰ̀ μεγέθη | 
| Vocative | μέγεθος | μεγέθει | μεγέθη | 
| Notes: | This table gives Attic inflectional endings. For declension in dialects other than Attic, see Appendix:Ancient Greek dialectal declension. | 
 
 
References
-  μέγεθος in Liddell & Scott (1940) A Greek–English Lexicon, Oxford: Clarendon Press
-  μέγεθος in Liddell & Scott (1889) An Intermediate Greek–English Lexicon, New York: Harper & Brothers
-  μέγεθος in Autenrieth, Georg (1891) A Homeric Dictionary for Schools and Colleges, New York: Harper and Brothers
-  «μέγεθος» in Cunliffe, Richard J. (1924) A Lexicon of the Homeric Dialect: Expanded Edition, Norman: University of Oklahoma Press, published 1963
-  “G3174”, in Strong’s Exhaustive Concordance to the Bible, 1979
-  Woodhouse, S. C. (1910) English-Greek Dictionary: A Vocabulary of the Attic Language, London: Routledge & Kegan Paul Limited. 
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amount idem, page 28.
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area idem, page 39.
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bigness idem, page 78.
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bulk idem, page 103.
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consequence idem, page 162.
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dimension idem, page 225.
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extent idem, page 296.
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girth idem, page 359.
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gravity idem, page 371.
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greatness idem, page 372.
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height idem, page 394.
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hugeness idem, page 409.
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immensity idem, page 418.
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importance idem, page 422.
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largeness idem, page 477.
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loudness idem, page 501.
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magnitude idem, page 507.
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power idem, page 630.
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prodigiousness idem, page 644.
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seriousness idem, page 755.
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significance idem, page 775.
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size idem, page 780.
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spaciousness idem, page 797.
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stature idem, page 813.
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stupendousness idem, page 829.
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tallness idem, page 854.
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vastness idem, page 945.
 
 
Greek
Noun
μέγεθος • (mégethos) n
-  size