from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The ordinal number matching the number 30 in a series.
  • n. One of 30 equal parts.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. The ordinal form of the number thirty.
  • n. The person or thing in the thirtieth position.
  • n. One of thirty equal parts of a whole.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Next in order after the twenty-ninth; the tenth after the twentieth; -- the ordinal of thirty.
  • adj. Constituting or being one of thirty equal parts into which anything is divided.
  • n. The quotient of a unit divided by thirty; one of thirty equal parts.

from The Century Dictionary and Cyclopedia

  • Next after the twenty-ninth: an ordinal numeral.
  • Constituting any one of thirty equal parts into which anything is divided.
  • n. Any one of thirty equal parts into which anything is divided.
  • n. In early English law, a thirtieth of the rents of the year, or of movables, or both, granted or levied by way of tax.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. position 30 in a countable series of things
  • adj. coming next after the twenty-ninth in position


Sorry, no etymologies found.


  • The final compiler and editor, to whom we are indebted for the collection in its present form, undoubtedly found the sweeping scepticism of the poet Agur and the pious protestations of his anonymous adversary, the thesis and the antithesis, inextricably interwoven in the section now known as the thirtieth chapter.

    The Sceptics of the Old Testament: Job - Koheleth - Agur

  • Reports of cases and special arguments, argued and adjudged in the court of King's Bench, beginning in Easter term the thirtieth of King Charles the Second, and ending in Easter Term the third of King James the Second.

    Inventory of Robert Carter's Estate, November [1733]

  • BOULDIN moved to amend the resolution of the senate, by striking out the words "twenty-third," and inserting "thirtieth" (so as to extend the session until the 30th of March); and the question being on agreeing thereto, Mr. BASS demanded the previous question; which was sustained by the house; and being put, was decided in the negative -- Ayes 39, noes 58.

    Journal of the House of Delegates, of the State of Virginia, for the Adjourned Session, 1863

  • Chapter 159. 133 by striking out the word "thirtieth", in the fourth line thereof, and inserting in place thereof the words: — thiily - tirst, — so that said section as amended shall read as fol - lows: — Section 5.

    Acts and resolves passed by the General Court

  • Section eleven of chapter twenty-nine of the General Acts of nineteen hundred and seventeen is hereby amended by striking out in the thirty-fifth line, the word "thirtieth", and substituting the word: — twentieth, — so that the last sentence of the said section will read as follows: — If the statement of the applicant as to residence is found to be true, the election commissioners shall place the name of the applicant on the voting list; otherAnse the election commis - sioners shall forth\\'ith notify the applicant to appear before them, and, if not satisfied that his statement is true, shall not place his name upon the voting list: provided, however, that no application for registration mider the pro\'isions of this section shall be received by the election commissioners or assistant registrars later than the twentieth day preced - ing a state or municipal election.

    Acts and resolves passed by the General Court

  • Hoover ordered the agency to celebrate several occasions every year—the thirtieth anniversary of the FBI, for example, or the thirtieth anniversary of the day he became director—and on these days the agents were expected to bring him presents.

    The Good Fight

  • This week also saw the thirtieth anniversary of Margaret Thatcher's victory in the 1979 general election.

    The week that was

  • Alone on my thirtieth birthday, crying in the darkness like a little bitch.

    Get Laid or Die Trying

  • Here I am with the Mercedes he gave me for my thirtieth birthday.

    Teed Off

  • I had flown to Cleveland just two months before to go to my thirtieth high school reunion.

    The Memory Palace


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