ˈhīfə noun
( plural hy·phae -ī(ˌ)ē)
Etymology: New Latin, from Greek hyphē web; akin to Greek hyphos web — more at weave
1. : one of the individual threads that make up the mycelium of a fungus, increase by apical growth, and are coenocytic in the Phycomycetes but transversely septate in the Ascomycetes and Basidiomycetes
2. : a simple or branched filamentous outgrowth from the cortex or other inner tissues of various large seaweeds especially of the order Fucales