The Collaborative International Dictionary of English v.0.48:

Secretory \Se*cre"to*ry\, a. [Cf. F. s['e]cr['e]toire. See
   Secrete.] (Physiol.)
   Secreting; performing, or connected with, the office of
   secretion; secernent; as, secretory vessels, nerves. -- n. A
   secretory vessel; a secernent.
   [1913 Webster]

WordNet (r) 3.0 (2006):

secretory
    adj 1: of or relating to or producing a secretion; " a secretory
           cell"

Moby Thesaurus II by Grady Ward, 1.0:

25 Moby Thesaurus words for "secretory":
   egestive, eliminative, excretionary, excretive, excretory,
   exudative, lachrymal, lachrymose, lacrimatory, lactational,
   lacteal, lacteous, rheumy, salivant, salivary, salivous,
   secretional, secretive, seminal, serous, sialagogic, spermatic,
   transudative, watering, watery