filoseBot. and Zool.|faɪˈləʊs| [as if ad. L. *fīlōs-us, f.fīlum thread.] Having a thread-like termination. 1823Crabb Technol.Dict., Filose, ending in a thread-like process; an epithet applied to insects and plants.1884Syd. Soc.Lex., Filose, in Botany.