# 基数 (ゲルマン系)序数 序数(接尾辞) ラテン系序数[1]
1 one first 1st primary / unitary
2 two second 2nd secondary / binary
3 three third 3rd tertiary / ternary
4 four fourth 4th quaternary
5 five fifth 5th quinary
6 six sixth 6th senary
7 seven seventh 7th septenary
8 eight eighth 8th octonary
9 nine ninth 9th nonary
10 ten tenth 10th denary
11 eleven eleventh 11th undenary
12 twelve twelfth 12th duodenary
13 thirteen thirteenth 13th tridenary
14 fourteen fourteenth 14th quatuodenary
15 fifteen fifteenth 15th quindenary
16 sixteen sixteenth 16th sedenary
17 seventeen seventeenth 17th septendenary
18 eighteen eighteenth 18th octodenary
19 nineteen nineteenth 19th novemdenary
20 twenty twentieth 20th vicenary
21 twenty-one twenty-first 21st
22 twenty-two twenty-second 22nd
23 twenty-three twenty-third 23rd
24 twenty-four twenty-fourth 24th
25 twenty-five twenty-fifth 25th
26 twenty-six twenty-sixth 26th
27 twenty-seven twenty-seventh 27th
28 twenty-eight twenty-eighth 28th
29 twenty-nine twenty-ninth 29th
30 thirty thirtieth 30th
31 thirty-one thirty-first 31st
40 forty fortieth 40th
50 fifty fiftieth 50th
60 sixty sixtieth 60th
70 seventy seventieth 70th
80 eighty eightieth 80th
90 ninety ninetieth 90th
100 one hundred one hundredth 100th
101 one hundred one one hundred first 101st
200 two hundred two hundredth 200th
1000 one thousand one thousandth 1000th
1945 nineteen forty-five nineteen forty-fifth 1945th

脚注 編集

  1. オックスフォード大学、2010年「What comes after primary, secondary, tertiary?」『Oxford Dictionaries - World of words』2010年11月21日参照