184 TERMS.— TIME. 



TERMS. 



Terminorogy (Lat. terminus., a term, and Gr. logos, a dis- 



coursej. — That branch of a science or art which exphiins 



the meaning of its technical terms. 

 Orismol'ogy (Gr. orismos, the marking out as a boundary, and 



logos). — That department of Naturdl History which relates 



to the technical terms of the science. 



TIME. 



Chronol'ogy (Gr. chronos, time, and logos, a discourse). — The 

 science which deteriuines the dates of events and the civil 

 distinctions of time. 



Anach'ronism. — An error with respect to chronology by which 

 an event is placed earlier than it really happened. 



Chronom'eter (Gr. chronos, time, and metron, a measure). — An 

 instrument that measures time, particularly one that meas- 

 ures time with great exactness. 



Concur 'rent. — The supernumerary days in the year over fifby- 

 two weeks, so called because they concur with the solar 

 cycle, whose course they follow. 



Cy'cle. — A revolution of a certain period of time within which 

 the same facts or events recur regularly and perpetually in 

 the same order. 



Cyclom'etry (cycle, and Gr. metron, a measure). — The art of 

 measuring cycles. 



Emer'gent Year. — The year or epoch from which any compu- 

 tation of time is made. 



E'pact, — A term denoting the moon's age at the end of the 

 year, or the number of days by which the last new moon 

 has preceded the beginning of the year. 



Ep'och. — A fixed point of time from which succeeding years 

 are numbered. 



E'ra. — A fixed point of time from which any number of years 

 is begun to be counted. It differs from epoch in this : era 

 is a point of time fixed by some nation or denomination of 

 men ; epoch is a point fixed by historians and chronologists. 



Hegi'ra. — The flight of Mohammed from Mecca, July 16, A. D. 

 022, — the epoch from which the Mohammedan era is 

 reckoned. 



