ordinal - definition, thesaurus and related words from WordNet-Online

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Adjective ordinal has 2 senses

ordinal - of or relating to a taxonomic order; "family and ordinal names of animals and plants"
ordinal - being or denoting a numerical order in a series; "ordinal numbers"; "held an ordinal rank of seventh"
Antonyms: cardinal, zero, 0, one, 1, i, ane, two, 2, ii, three, 3, iii, four, 4, iv, five, 5, v, six, 6, vi, half dozen, half a dozen, seven, 7, vii, eight, 8, viii, nine, 9, ix, ten, 10, x, eleven, 11, xi, twelve, 12, xii, dozen, thirteen, 13, xiii, fourteen, 14, xiv, fifteen, 15, xv, sixteen, 16, xvi, seventeen, 17, xvii, eighteen, 18, xviii, nineteen, 19, xix, twenty, 20, xx, twenty-one, 21, xxi, twenty-two, 22, xxii, twenty-three, 23, xxiii, twenty-four, 24, xxiv, twenty-five, 25, xxv, twenty-six, 26, xxvi, twenty-seven, 27, xxvii, twenty-eight, 28, xxviii, twenty-nine, 29, xxix, thirty, 30, xxx, thirty-one, 31, xxxi, thirty-two, 32, xxxii, thirty-three, 33, xxxiii, thirty-four, 34, xxxiv, thirty-five, 35, xxxv, thirty-six, 36, xxxvi, thirty-seven, 37, xxxvii, thirty-eight, 38, xxxviii, thirty-nine, 39, ixl, forty, 40, xl, twoscore, forty-one, 41, xli, forty-two, 42, xlii, forty-three, 43, xliii, forty-four, 44, xliv, forty-five, 45, xlv, forty-six, 46, xlvi, forty-seven, 47, xlvii, forty-eight, 48, xlviii, forty-nine, 49, il, fifty, 50, l, fifty-one, 51, li, fifty-two, 52, lii, fifty-three, 53, liii, fifty-four, 54, liv, fifty-five, 55, lv, fifty-six, 56, lvi, fifty-seven, 57, lvii, fifty-eight, 58, lviii, fifty-nine, 59, ilx, sixty, 60, lx, threescore, sixty-one, 61, lxi, sixty-two, 62, lxii, sixty-three, 63, lxiii, sixty-four, 64, lxiv, sixty-five, 65, lxv, sixty-six, 66, lxvi, sixty-seven, 67, lxvii, sixty-eight, 68, lxviii, sixty-nine, 69, ilxx, seventy, 70, lxx, seventy-one, 71, lxxi, seventy-two, 72, lxxii, seventy-three, 73, lxxiii, seventy-four, 74, lxxiv, seventy-five, 75, lxxv, seventy-six, 76, lxxvi, seventy-seven, 77, lxxvii, seventy-eight, 78, lxxviii, seventy-nine, 79, ilxxx, eighty, 80, lxxx, fourscore, eighty-one, 81, lxxxi, eighty-two, 82, lxxxii, eighty-three, 83, lxxxiii, eighty-four, 84, lxxxiv, eighty-five, 85, lxxxv, eighty-six, 86, lxxxvi, eighty-seven, 87, lxxxvii, eighty-eight, 88, lxxxviii, eighty-nine, 89, ixc, ninety, 90, xc, ninety-one, 91, xci, ninety-two, 92, xcii, ninety-three, 93, xciii, ninety-four, 94, xciv, ninety-five, 95, xcv, ninety-six, 96, xcvi, ninety-seven, 97, xcvii, ninety-eight, 98, xcviii, ninety-nine, 99, ic, hundred, a hundred, one hundred, 100, c, hundred and one, a hundred and one, one hundred one, 101, ci, one hundred five, 105, cv, one hundred ten, 110, cx, one hundred fifteen, 115, cxv, one hundred twenty, 120, cxx, one hundred twenty-five, 125, cxxv, one hundred thirty, 130, cxxx, one hundred thirty-five, 135, cxxxv, one hundred forty, 140, cxl, one hundred forty-five, 145, cxlv, one hundred fifty, 150, cl, one hundred fifty-five, 155, clv, one hundred sixty, 160, clx, one hundred sixty-five, 165, clxv, one hundred seventy, 170, clxx, one hundred seventy-five, 175, clxxv, one hundred eighty, 180, clxxx, one hundred ninety, 190, xcl, two hundred, 200, cc, three hundred, 300, ccc, four hundred, 400, cd, five hundred, 500, d, thousand, a thousand, one thousand, 1000, m, k, ten thousand, hundred thousand, a hundred thousand, million, a million, billion, a billion, trillion, a trillion, zillion, a zillion

Noun ordinal has 1 sense

ordinal number, ordinal, no. - the number designating place in an ordered sequence
--₁ is a kind of number
--₁ has particulars: first, number one, number 1