In general a point at which a given mathematical object is not defined, or a point of an exceptional set where it fails to be well-behaved in some particular way, such as differentiability.
Such a point is an example of what mathematicians call a singularity.
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A singularity whose gravity permits nothing to escape: no matter, no energy.
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The mere singularity of the names alone ought to decide the point.
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One such singularity surrounds every sufficiently large mass in the Einsteinian universe.
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Kurzweil transformed the singularity from an interesting speculation into a social movement.
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I was focused on the singularpoint my universe had shrunk to: my book.
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The singularpoint about him was his walk.
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This affection developed to a singularpoint; in a soul so new, it was like a first love.
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If we agreed in that one result, I fancy it was the sole and singularpoint of concord.
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That the speaker enjoyed the reputation of being something of a profligate lent singularpoint to that confession.
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The singularpoint in the structure was a rough arch of rock, which extended above it and formed its roof.
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He must relieve himself through a problem of law, which, at this late hour, brings matters to a singularpoint.
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I must remark upon a very singularpoint that has been raised by the learned counsel for the petitioner, which is this:
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This last, singularpoint would soon be made true in Guatemala, albeit the result of a more genteel anticommunism expressed through a U.S. bombing campaign.
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Yes, you will find some very singularpoints about the moor, Dr. Watson.
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There were some most singularpoints about the man.
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There are several singularpoints about the case.
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'There are one or two very singularpoints about this room.
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'Walter Severn' in the comedy is a man of singularpoints.
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'There are some very singularpoints here,' said Holmes, smiling.
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"And yet there are singularpoints about it which hold out some hopes for our client."