Definition of "delineable"

A pathological process called 'psychiatrosis' may well be found, by the same methods, to be a delineable entity, with somatic correlates, and psychic mechanisms […]

1967, R. D. Laing, The Politics of Experience and the Bird of Paradise

But what Authority is this to shape all his parts like man ? In either Vision there is some thing not delineable;

1623, Owen Feltham, Resolves: Divine, Moral, Political