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 (ī-sŏk′rə-nəl) or i·soch·ro·nous (-nəs)
1. Equal in duration.
2. Characterized by or occurring at equal intervals of time.

[From New Latin īsochronus, from Greek īsokhronos : īso-, iso- + khronos, time.]

i·soch′ro·nal·ly adv.
i·soch′ro·nism n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. the characteristic of having a uniform period of vibration.
2. the condition of occurring at the same time as another event. — isochronic, adj.isochrony, n.
See also: Time
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
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The PF318 self-winding movement has a power reserve of 50 hours and excellent isochronism thanks to its two series-mounted barrels that regulate the rate.
Some studies use accessibility to compare the relative competitiveness between public and private cars; spatial accessibility comparison [28-32] and traffic isochronism [33, 34] are two important methods.
For example, Birth elsewhere sets out the way that 'clocks address three distinct cognitive challenges: (1) the generation of uniform short intervals, or isochronism; (2) the representation of long intervals based on the scalability of the short intervals; and (3) the determination of points in time'.