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fortieth
The definition of fortieth is something that occurs after 39 other things have occurred, or that occurs in the position identified by the number 40.
(adjective)The birthday after your 39th birthday is an example of your fortieth birthday.
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See fortieth in Webster's New World College Dictionary
adjective
- preceded by thirty-nine others in a series; 40th
- designating any of the forty equal parts of something
Origin: ME fourtithe < OE feowertigotha: see forty & -th
noun
- the one following the thirty-ninth
- any of the forty equal parts of something; 1/40
adverb
in the fortieth place, rank, group, etc.
See fortieth in American Heritage Dictionary 4
noun
- The ordinal number matching the number 40 in a series.
- One of 40 equal parts.
Related Forms:
- forˈti·eth adverb & adj.
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