accessional

from WordNet (r) 3.0 (2006)
accessional
    adj 1: of or constituting an accession
    
from The Collaborative International Dictionary of English v.0.48
Accessional \Ac*ces"sion*al\, a.
   Pertaining to accession; additional. [R.] --Sir T. Browne.
   [1913 Webster]
    

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