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  1. #1
    jiang is offline Key Member
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    periodic and periodical

    Dear teachers,

    Please read the sentence:

    The economic boom and recession is a periodical occurrence.

    Could please explain if I can use "periodic" in this sentence?

    Looking forward to hearing from you.
    Thank you in advance.

    Jiang

  2. #2
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    Neillythere is offline Senior Member
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    Re: periodic and periodical

    I'm not a teacher and although I believe they may well be interchangeable, I would have used "periodic" in this instance, as I tend to use the term "periodical" only in the context of a magazine (a "periodical").

  3. #3
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    Re: periodic and periodical

    I am not a teacher, but I'd say ...

    periodical refers to directories, journals, magazines, something that is released periodically.

    periodic refers to, for example, calculation, it might be a sign, waves, outputs, voltage and so on.

    Hope this helps

  4. #4
    vil is offline VIP Member
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    Re: periodic and periodical

    Attention: I'm not a teacher.

    Hi jiang,

    periodic (adj.)
    1. Having or marked by repeated cycles.
    2. Happening or appearing at regular intervals.
    3. Recurring or reappearing from time to time; intermittent.
    4. Characterized by periodic sentences.
    In technical use, periodic means “at regular or predictable intervals,” as in the Periodic Table of the Elements. Often, however, periodic is used to mean “occasional, intermittent.

    periodical (adj.)
    1. Periodic.
      1. Published at regular intervals of more than one day.
      2. Of or relating to a publication issued at such intervals.
    n.
    A publication issued at regular intervals of more than one day.

    periodical: Definition, Synonyms and Much More from Answers.com

    Regards.

    V.

  5. #5
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    Re: periodic and periodical

    I checked the dictioary before responding, and the 1st definition of the adjective "periodical" was "periodic"

    see periodical - definition of periodical by the Free Online Dictionary, Thesaurus and Encyclopedia.+

    PS It appears Vil got the reply out 1st from a very similar source.

  6. #6
    jiang is offline Key Member
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    Re: periodic and periodical

    Dear Neillythere,

    Thank you very much for your explanation. But in my dictionary 'periodical' can also be used as an adjective.

    So what shall I do?
    Jiang
    Quote Originally Posted by Neillythere View Post
    I'm not a teacher and although I believe they may well be interchangeable, I would have used "periodic" in this instance, as I tend to use the term "periodical" only in the context of a magazine (a "periodical").

  7. #7
    jiang is offline Key Member
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    Re: periodic and periodical

    Dear marciobarbalho,

    Thank you very much for providing the definitions. But periodical can also be used as an adjective.

    So what shall I do?

    Jiang
    Quote Originally Posted by marciobarbalho View Post
    I am not a teacher, but I'd say ...

    periodical refers to directories, journals, magazines, something that is released periodically.

    periodic refers to, for example, calculation, it might be a sign, waves, outputs, voltage and so on.

    Hope this helps

  8. #8
    jiang is offline Key Member
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    Re: periodic and periodical

    Dear vil,

    According to your definitions they are interchangeable in this sentence. Is that right?

    Looking forward to hearing ffrom you.

    Thank you in advance.

    Jiang
    Quote Originally Posted by vil View Post
    Attention: I'm not a teacher.

    Hi jiang,

    periodic (adj.)
    1. Having or marked by repeated cycles.
    2. Happening or appearing at regular intervals.
    3. Recurring or reappearing from time to time; intermittent.
    4. Characterized by periodic sentences.
    In technical use, periodic means “at regular or predictable intervals,” as in the Periodic Table of the Elements. Often, however, periodic is used to mean “occasional, intermittent.

    periodical (adj.)
    1. Periodic.
      1. Published at regular intervals of more than one day.
      2. Of or relating to a publication issued at such intervals.
    n.
    A publication issued at regular intervals of more than one day.

    periodical: Definition, Synonyms and Much More from Answers.com

    Regards.

    V.

  9. #9
    jiang is offline Key Member
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    Re: periodic and periodical

    Dear Neillythere,

    Thank you very much for providing me with the website. I think the two are interchageable in my sentence.

    Jiang
    Quote Originally Posted by Neillythere View Post
    I checked the dictioary before responding, and the 1st definition of the adjective "periodical" was "periodic"

    see periodical - definition of periodical by the Free Online Dictionary, Thesaurus and Encyclopedia.+

    PS It appears Vil got the reply out 1st from a very similar source.

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