Woodhouse's English -> Greek dictionary gives "a space of ten years: chronos dekaetêros" (lit. ten-yearly time"), so I would suggest making it a neuter adjective and going with "pentekontaeteron".
		Vigilantibus non dormientibus jura subveniunt.
—Nous disons en allemand : le guerre, le mort, le lune, alors que 'soleil' et 'amour' sont du sexe féminin : la soleil, la amour. La vie est neutre.
—La vie ? Neutre ? C'est très joli, et surtout très logique.
	
	
	
	
	
—Nous disons en allemand : le guerre, le mort, le lune, alors que 'soleil' et 'amour' sont du sexe féminin : la soleil, la amour. La vie est neutre.
—La vie ? Neutre ? C'est très joli, et surtout très logique.
			A question related to ancient Greek words
	    
	         - 16/07/2013 09:58:53 PM
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			Tom's your man for this one, I'd say, maybe Danny or Gabriel
	    
	         - 16/07/2013 10:50:49 PM
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			It is for fiction, yes.
	    
	         - 16/07/2013 11:12:04 PM
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			Re: It is for fiction, yes.
	    
	         - 17/07/2013 01:17:19 AM
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			That would bug the hell out of me.
	    
	         - 17/07/2013 03:49:12 PM
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			50 = pentêkonta. Year = etos.
		
	         - 17/07/2013 12:00:09 AM
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			"Fifty years old" is πεντηκονταετης or πεντηκοντουτης
	    
	         - 18/07/2013 12:20:58 PM
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			If I'm converting the letters correctly ...
	    
	         - 18/07/2013 04:20:49 PM
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			The answer is Pentakron...
	    
	         - 18/07/2013 06:02:11 PM
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			If your goal is a common-use word I'd vote /pen tek/, it seems to be quick and comfortable. *NM*
	    
	         - 19/07/2013 04:11:44 PM
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			pentēkontaeteiron, not pentēkontaeteron
	    
	         - 19/07/2013 02:40:51 AM
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			This is what I would go with. Granted, at some level it becomes an issue of transliteration. *NM*
	    
	         - 20/07/2013 10:13:23 AM
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