/fawr"tee ith/ , adj.
1. next after the thirty-ninth; being the ordinal number for 40.
2. being one of 40 equal parts.
n.
3. a fortieth part, esp. of one ( 1 / 40 ).
4. the fortieth member of a series.
[ bef. 1100; ME fourtithe, OE feowertigotha. See FORTY, -ETH ]