chrono-, chron-

(Greek: time, times; sequence of times)

seismochronograph
A chronograph (an instrument that records time with great accuracy) for determining the time at which an earthquake shock appears.
sphygmochronograph (s) (noun), sphygmochronographs (pl)
A modified sphygmograph that represents graphically the time relations between the beat of the heart and the pulse; one recording the character of the pulse as well as its rapidity.
sphygmochronography
The registration of the time intervals of the pulse waves.
synchromesh
An automotive gear shift system in which the gears are synchronized at the same speeds before engaging to effect a smooth change.
synchronal
Occurring at the same time or rate, synchronous.
synchronia
synchronic
1. Happening at the same time.
2. In medicine, referring to the study of the natural history of a disease by its state and distribution in a population at one time.

The inferences about longitudinal course from such a study are warranted only under special conditions, notably that the longitudinal course of the disease is itself unchanging and that subjects in the sample are a representative sample of the survivors.

synchronicity
The phenomenon of events which coincide in time and appear meaningfully related but have no discoverable causal connection.
synchronism
synchronism, synchrony, synchronistic
1. The quality of being synchronous; occurrence of two or more events at the same time; the condition of being simultaneous; concurrence of two or more events in time; contemporary existence or occurrence.
2. Arrangement or treatment of synchronous events, etc. together or in conjunction, as in a history; agreement in relation to the time of the events described.
3. Representation of events of different times together, e.g. in the same picture.
4. Recurrence at the same successive instances of time; the fact of keeping time, i.e. proceeding at the same rate and exactly together; coincidence of period, as of two sets of movements, vibrations, or alternations of electric current.
synchronist
One who lives at the same time with another; a contemporary.
synchronistic
Belonging to synchronism; relating to or exhibiting the concurrence of events in time; also loosely, involving synchronism, synchronous, simultaneous.
synchronization
Timing readers or reader antennas near one another so that they don't interfere with each another.
synchronize, synchronization
1. To occur at the same time; to coincide in point of time; to be contemporary or simultaneous.
2. To cause to be, or represent as, synchronous; to assign the same date to; to bring together events, etc. belonging to the same time.
3. To occur at the same successive instants of time; to keep time with; to go on at the same rate and exactly together; to have coincident periods, as two sets of movements or vibrations.
4. To cause to go at the same rate; specifically, to cause (a timepiece) to indicate the same time as another.
5. In technical senses: to cause to coincide in time; to operate simultaneously or in synchronization.
synchronizer
1. In computer science, a storage device that serves as a buffer to maintain synchronization between devices transmitting at different rates.
2. In electronics, the component of a radar set that produces the timing voltage for the complete set.