The Collaborative International Dictionary of English v.0.48:

Long-lived \Long"-lived`\, a.
   1. Having a long life; having constitutional peculiarities
      which make long life probable; lasting long; as, a
      long-lived tree; they are a long-lived family; long-lived
      prejudices.
      [1913 Webster]

   2. same as long-lasting.

   Syn: durable, lasting, long-lasting.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

long-lived
    adj 1: existing for a long time; "hopes for a durable peace"; "a
           long-lasting friendship" [syn: durable, lasting,
           long-lasting, long-lived]