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Can “semicircle” be used to refer to a part-circle that is not a exact half-circle?


Can “whose” refer to an inanimate object?Can “either” be used in this way?Could the sentence “Not even death can do us part” be considered correct?What do you call nested circles that are not concentric?Can your's ever be used?How can I describe the intersection between a circle and a curve?If I can say “not that good a review,” does that mean I can say “not that good reviews”?Examples of verbs that can be negated with not instead of don'tCan gerund be used after “to”?“Can you not do that?”













1















Going through a specification sheet for an engineering device, I glanced upon this phrase:




...the angular scanning range of the device is a semicircle of 300 degrees...




A semicircle is usually defined as a proper half of a circle - in mathematical terms a circle of angle 180 degrees. Clearly 300 degrees is more than a half, it is closer to being 5/6th of a circle. Is it grammatically correct to refer to non-full circles as a "semicircle", even though they are not exactly a half-circle.










share|improve this question







New contributor




Transistor Overlord is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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  • 5





    I would say the word arc can be used: "an arc of 300 degrees," or perhaps: "the scanning range of the device is an angle of 300 degrees".

    – Weather Vane
    3 hours ago






  • 2





    No, you can't use it. A semi-circle means half of a circle.

    – ubi hatt
    3 hours ago















1















Going through a specification sheet for an engineering device, I glanced upon this phrase:




...the angular scanning range of the device is a semicircle of 300 degrees...




A semicircle is usually defined as a proper half of a circle - in mathematical terms a circle of angle 180 degrees. Clearly 300 degrees is more than a half, it is closer to being 5/6th of a circle. Is it grammatically correct to refer to non-full circles as a "semicircle", even though they are not exactly a half-circle.










share|improve this question







New contributor




Transistor Overlord is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.















  • 5





    I would say the word arc can be used: "an arc of 300 degrees," or perhaps: "the scanning range of the device is an angle of 300 degrees".

    – Weather Vane
    3 hours ago






  • 2





    No, you can't use it. A semi-circle means half of a circle.

    – ubi hatt
    3 hours ago













1












1








1








Going through a specification sheet for an engineering device, I glanced upon this phrase:




...the angular scanning range of the device is a semicircle of 300 degrees...




A semicircle is usually defined as a proper half of a circle - in mathematical terms a circle of angle 180 degrees. Clearly 300 degrees is more than a half, it is closer to being 5/6th of a circle. Is it grammatically correct to refer to non-full circles as a "semicircle", even though they are not exactly a half-circle.










share|improve this question







New contributor




Transistor Overlord is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.












Going through a specification sheet for an engineering device, I glanced upon this phrase:




...the angular scanning range of the device is a semicircle of 300 degrees...




A semicircle is usually defined as a proper half of a circle - in mathematical terms a circle of angle 180 degrees. Clearly 300 degrees is more than a half, it is closer to being 5/6th of a circle. Is it grammatically correct to refer to non-full circles as a "semicircle", even though they are not exactly a half-circle.







grammaticality mathematics






share|improve this question







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Transistor Overlord is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question







New contributor




Transistor Overlord is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this question




share|improve this question






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asked 3 hours ago









Transistor OverlordTransistor Overlord

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Transistor Overlord is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







  • 5





    I would say the word arc can be used: "an arc of 300 degrees," or perhaps: "the scanning range of the device is an angle of 300 degrees".

    – Weather Vane
    3 hours ago






  • 2





    No, you can't use it. A semi-circle means half of a circle.

    – ubi hatt
    3 hours ago












  • 5





    I would say the word arc can be used: "an arc of 300 degrees," or perhaps: "the scanning range of the device is an angle of 300 degrees".

    – Weather Vane
    3 hours ago






  • 2





    No, you can't use it. A semi-circle means half of a circle.

    – ubi hatt
    3 hours ago







5




5





I would say the word arc can be used: "an arc of 300 degrees," or perhaps: "the scanning range of the device is an angle of 300 degrees".

– Weather Vane
3 hours ago





I would say the word arc can be used: "an arc of 300 degrees," or perhaps: "the scanning range of the device is an angle of 300 degrees".

– Weather Vane
3 hours ago




2




2





No, you can't use it. A semi-circle means half of a circle.

– ubi hatt
3 hours ago





No, you can't use it. A semi-circle means half of a circle.

– ubi hatt
3 hours ago










1 Answer
1






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oldest

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5














In English, the prefix semi usually partly, as in semiconscious or semiautomatic.



But it can also mean half, as in semiannually, which always refers to something that happens every half-year (twice yearly).



The word semicircle has a specific defined meaning: a half of a circle or of its circumference. (Source: New Oxford American Dictionary)



So no, semicircle cannot be used to refer to any part of a circle that isn't 180 degrees.






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    1 Answer
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    5














    In English, the prefix semi usually partly, as in semiconscious or semiautomatic.



    But it can also mean half, as in semiannually, which always refers to something that happens every half-year (twice yearly).



    The word semicircle has a specific defined meaning: a half of a circle or of its circumference. (Source: New Oxford American Dictionary)



    So no, semicircle cannot be used to refer to any part of a circle that isn't 180 degrees.






    share|improve this answer








    New contributor




    Steven Klein is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.
























      5














      In English, the prefix semi usually partly, as in semiconscious or semiautomatic.



      But it can also mean half, as in semiannually, which always refers to something that happens every half-year (twice yearly).



      The word semicircle has a specific defined meaning: a half of a circle or of its circumference. (Source: New Oxford American Dictionary)



      So no, semicircle cannot be used to refer to any part of a circle that isn't 180 degrees.






      share|improve this answer








      New contributor




      Steven Klein is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






















        5












        5








        5







        In English, the prefix semi usually partly, as in semiconscious or semiautomatic.



        But it can also mean half, as in semiannually, which always refers to something that happens every half-year (twice yearly).



        The word semicircle has a specific defined meaning: a half of a circle or of its circumference. (Source: New Oxford American Dictionary)



        So no, semicircle cannot be used to refer to any part of a circle that isn't 180 degrees.






        share|improve this answer








        New contributor




        Steven Klein is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
        Check out our Code of Conduct.










        In English, the prefix semi usually partly, as in semiconscious or semiautomatic.



        But it can also mean half, as in semiannually, which always refers to something that happens every half-year (twice yearly).



        The word semicircle has a specific defined meaning: a half of a circle or of its circumference. (Source: New Oxford American Dictionary)



        So no, semicircle cannot be used to refer to any part of a circle that isn't 180 degrees.







        share|improve this answer








        New contributor




        Steven Klein is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
        Check out our Code of Conduct.









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        share|improve this answer






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        answered 1 hour ago









        Steven KleinSteven Klein

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        511




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