The phrase "a missing period" is correct and usable in written English.
It can be used when referring to a situation where a period (punctuation mark) is absent from a sentence or statement, which may affect clarity or correctness.
Example: "The sentence was confusing because it had a missing period at the end."
Alternatives: "an absent period" or "a period that is not present".
The sediments left behind sit atop a great unconformity, a missing period of geologic time, with the 8-million-year-old lake silt blanketing the 225-million-year-old pink mudstone that forms the Painted Desert.
The Bidahochi Formation sits atop a great unconformity, a missing period of geologic time, with the 8-million-year-old lake beds blanketing the 225-million-year-old pink mudstone that forms the Chinle Formation.
Guest curator Dennis Reed has made slow but steady recovery of this mostly missing period a life's work.
In the alternative scheme of Fiete et al. (2008); Sreenivasan and Fiete (2011) lesions of a module produce periodic ambiguities that are sporadically tied to the missing period.
The one national news outlet that believes it is a story about a missing woman, period, has ignored it.
He soon gravitated to Islamic pottery from the so-called missing period of 1350 to 1550, a historic blank that he was determined to fill in to support his thesis that Islamic pottery developed continuously from its beginnings through the Safavid period of the 16th to the early 18th century.
They had found new State Department messages but none, after all, from the missing period at the start of Clinton's term, and nothing that suggested a criminal motive.
If there were data for 10 to 19 days, the number of headache days for the missing period was imputed by taking the average of the 2 estimates (the mLOCF estimate and the prorated estimate for the data recorded).
If there were data for < 10 days in the diary, including for those who withdrew from the study, the number of headache days for the missing period was imputed by mLOCF based on the patient's previous 28-day diary period and adjusted by the mean change observed in all patients with diary records for the same periods.
I still haven't solved the case of the missing period.
Biographer David Crane reduces the missing period to eleven weeks, but is unable to clarify further.
