| nanosecond; nanoseconds. |
| nsec abbr. nanosecond |
A billionth of a second.
Note: The term is often used to refer to a very short time: “He missed having an accident by nanoseconds.”
N
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| nanosecond (nān'ə-sěk'ənd) Pronunciation Key
One billionth (10-9) of a second. |
| nsec nanosecond |