Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
anguĭ-tĕnens, entis, adj. [anguis-teneo], serpent-holding; hence, subst., the constellation, = anguifer, transl. of the Gr. Ὀφιοῦχος, Serpent-bearer, Cic. N. D. 2, 42; Manil. 5, 384.