Definify.com

Webster 1913 Edition

Adj.

Capable of being, or liable to be, delineated.

Feltham.

delineable ‎(comparative more delineable, superlative most delineable)

Capable of being, or liable to be, delineated.
- 1967, R. D. Laing, The Politics of Experience and the Bird of Paradise
  A pathological process called 'psychiatrosis' may well be found, by the same methods, to be a delineable entity, with somatic correlates, and psychic mechanisms […]
(Can we find and add a quotation of Feltham to this entry?)