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1.
the end of all existence
The terminus is near.
by Jonathan Daniels November 20, 2003
 
2.
Latin term for 'Leader of Men' generally, or 'Ruler of Humanity' specifically. From the the short-form, 'Termin', meaning 'Leader', and 'genus', meaning family, or 'species'.
Alexander the Great was the terminus of his time.
by GregP December 10, 2006