eightieth
part of speech
adjective; noun (the eightieth, an eightieth); ordinal number (80th)
meaning for a pupil
1) The ordinal number for 80: coming after the seventy-ninth and before the eighty-first. tree →
2) One of 80 equal parts of something (1/80). tree →
sense in the lessons
In maths, ordinal numbers show order in a line or list; in everyday life, an eightieth birthday is a big celebration; phrases: «eightieth birthday», «the eightieth anniversary», «one eightieth».
examples
- Granny had a big party for her eightieth birthday. tree →
- He finished in eightieth place out of 200 runners. tree →
- This year is the eightieth anniversary of our school. tree →
- One eightieth of 160 is 2. tree →
- The eightieth page of my book has a map. tree →
- Written in figures, eightieth is 80th. tree →
note
Spelling: eight + ieth (the y of eighty changes to i): eightieth. Maths: an eightieth = 1/80 = 0.0125. Ordinal: 80th; cardinal: eighty.
Trees and pragmatics
Every meaning and example of «eightieth» parsed by Mova, each sentence with its dependency tree and frames.