chrono-, chron- +

An error in chronology; usually taken as one in which an event, etc., is referred to a later date than the true one.

A geochronology based on fossils that either supplement or take the place of biostratigraphically significant fossils.

1. An instrument for taking a series of instantaneous photographs at regular short intervals of time; also, each of the photographs so taken.
2. An instrument by which a beam of light is caused to produce a photographic image at some precise instant of time; for example, so as to show the exact time at which a star crosses the meridian.

The interval of time between consecutive formations of leaf primordia (or of pairs of such primordia) in a growing shoot apex of a plant.

A chronicle of many events or periods.

1. Pertaining to a period before time began.
2. The dating of an event as earlier than its actual occurrence.

A false dating, an error in date.

An automotive gear shift system in which the gears are synchronized at the same speeds before engaging to effect a smooth change.

Occurring at the same time or rate, synchronous.

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.

The phenomenon of events which coincide in time and appear meaningfully related but have no discoverable causal connection.

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.

One who lives at the same time with another; a contemporary.

Belonging to synchronism; relating to or exhibiting the concurrence of events in time; also loosely, involving synchronism, synchronous, simultaneous.

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.