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Post office instrument
Answer for the clue "Post office instrument ", 8 letters:
canceler
Word definitions for canceler in dictionaries
Wiktionary
Word definitions in Wiktionary
alt. Something that, or someone who cancels something; specifically an electronic device that cancels a signal. n. Something that, or someone who cancels something; specifically an electronic device that cancels a signal.
Usage examples of canceler.
The chill blast of a coldray diverted the heatseaking warheads, while a radar canceler canceled the radar.
The chill blast of a coldray diverted the heatseeking warheads, while a radar canceler canceled the radar.
A bad combination of cancelers will kill a patient as easily as the blue pox.
Now we must devise the canceler blends that will treat the largest number of the sick.