The Collaborative International Dictionary of English v.0.48:

Phenomenology \Phe*nom`e*nol"o*gy\, n. [Phenomenon + -logy: cf.
   F. ph['e]nom['e]nologie.]
   A description, history, or explanation of phenomena. "The
   phenomenology of the mind." --Sir W. Hamilton.
   [1913 Webster]

WordNet (r) 3.0 (2006):

phenomenology
    n 1: a philosophical doctrine proposed by Edmund Husserl based
         on the study of human experience in which considerations of
         objective reality are not taken into account

Moby Thesaurus II by Grady Ward, 1.0:

27 Moby Thesaurus words for "phenomenology":
   aesthetics, axiology, casuistry, cosmology, epistemology, ethics,
   first philosophy, gnosiology, logic, mental philosophy,
   metaphysics, moral philosophy, ontology, philosophastry,
   philosophic doctrine, philosophic system, philosophic theory,
   philosophical inquiry, philosophical speculation, philosophy,
   school of philosophy, school of thought, science of being,
   sophistry, theory of beauty, theory of knowledge, value theory