pulsar clock

Noun

 * 1) The regular timing of pulses from a pulsar.
 * 2) A clock built to measure time based on the regular pulses from a pulsar.
 * 1) A clock built to measure time based on the regular pulses from a pulsar.
 * 1) A clock built to measure time based on the regular pulses from a pulsar.
 * 1) A clock built to measure time based on the regular pulses from a pulsar.
 * 1) A clock built to measure time based on the regular pulses from a pulsar.