Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† cŏlossĭcus, a, um, adj., = κολοσσικός, colossal, gigantic: Apollo, Vitr. 10, 6: signum colossicon, Plin. 34, 8, 19, § 54.
Comp. Gr. colossicoteros, -a, acc. -an, Vitr. 3, 5, 9, p. 98 Bip., and id. 10, 2, 4, p. 292 id. (prob. to be written with Greek letters).