seventy-eighth
[ sev-uh n-tee-eytth, -eyth ]
/ ˈsɛv ən tiˈeɪtθ, -ˈeɪθ /
adjective
next after the seventy-seventh; being the ordinal number for 78.
being one of 78 equal parts.
noun
a seventy-eighth part, especially of one (1/78).
the seventy-eighth member of a series.