1. (noun) the number designating place in an ordered sequence

• no.
• ordinal number

1. (adjective) being or denoting a numerical order in a series

• 1000th
• thousandth
• 100th
• centesimal
• hundredth
• 101st
• hundred-and-first
• 105th
• hundred-and-fifth
• 10th
• tenth
• 110th
• hundred-and-tenth
• 115th
• hundred-and-fifteenth
• 11th
• eleventh
• 120th
• hundred-and-twentieth
• 125th
• hundred-and-twenty-fifth
• 12th
• twelfth
• 130th
• hundred-and-thirtieth
• 135th
• hundred-and-thirty-fifth
• 13th
• thirteenth
• 140th
• hundred-and-fortieth
• 145th
• hundred-and-forty-fifth
• 14th
• fourteenth
• 150th
• hundred-and-fiftieth
• 155th
• hundred-and-fifty-fifth
• 15th
• fifteenth
• 160th
• hundred-and-sixtieth
• 165th
• hundred-and-sixty-fifth
• 16th
• sixteenth
• 170th
• hundred-and-seventieth
• 175th
• hundred-and-seventy-fifth
• 17th
• seventeenth
• 180th
• hundred-and-eightieth
• 18th
• eighteenth
• 190th
• hundred-and-ninetieth
• 19th
• nineteenth
• 1st
• first
• 200th
• two-hundredth
• 20th
• twentieth
• 21st
• twenty-first
• 22nd
• twenty-second
• 23rd
• twenty-third
• 24th
• twenty-fourth
• 25th
• twenty-fifth
• 26th
• twenty-sixth
• 27th
• twenty-seventh
• 28th
• twenty-eighth
• 29th
• twenty-ninth
• 2d
• 2nd
• second
• 300th
• three-hundredth
• 30th
• thirtieth
• 31st
• thirty-first
• 32nd
• thirty-second
• 33rd
• thirty-third
• 34th
• thirty-fourth
• 35th
• thirty-fifth
• 36th
• thirty-sixth
• 37th
• thirty-seventh
• 38th
• thirty-eighth
• 39th
• thirty-ninth
• 3rd
• tertiary
• third
• 400th
• four-hundredth
• 40th
• fortieth
• 41st
• forty-first
• 42nd
• forty-second
• 43rd
• forty-third
• 44th
• forty-fourth
• 45th
• forty-fifth
• 46th
• forty-sixth
• 47th
• forty-seventh
• 48th
• forty-eighth
• 49th
• forty-ninth
• 4th
• fourth
• quaternary
• 500th
• five-hundredth
• 50th
• fiftieth
• 55th
• fifty-fifth
• 5th
• fifth
• 60th
• sixtieth
• 64th
• sixty-fourth
• 65th
• sixty-fifth
• 6th
• sixth
• 70th
• seventieth
• 75th
• seventy-fifth
• 7th
• seventh
• 80th
• eightieth
• 85th
• eighty-fifth
• 8th
• eighth
• 90th
• ninetieth
• 95th
• ninety-fifth
• 9th
• ninth
• billionth
• millionth
• n-th
• nth
• quadrillionth
• quintillionth
• trillionth
• umpteenth
• umptieth
• umteenth
• zero
• zeroth

1. (noun) the number designating place in an ordered sequence

• first
• number 1
• number one

1. (noun) the number designating place in an ordered sequence

• number

1. (adjective) being or denoting a numerical order in a series

• cardinal

1. (adjective) being or denoting a numerical order in a series

• no.
• ordinal number

1. (adjective) of or relating to a taxonomic order

• order