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A change or set of changes in the timing or duration of an organism's ontogenetic development compared with an ancestral species, resulting in morphological differences between ancestor and descendant.

[hetero- + Greek khronos, time + -y.]

het′e·ro·chron′ic, het′e·ro·chron′ous adj.


(ˌhɛtərəʊˈkrɒnɪk) or


(Biology) biology occurring at different times or stages
References in periodicals archive ?
The narrator's full realization and its contingent delineations of the multiple and heterodox temporal status of Marco's journey thus can be understood through the Bakhtinian concept of 'heterochrony' where a given moment in the present is crammed with many simultaneously coexisting, heterochronous temporal possibilities such that our experience and understanding of time enters the conglomerate realm of "pluritemporality" (Cromphout 168).
The Utrillas Formation is a highly heterochronous unit composed of a pile of clastic wedges that ranges in age from the Albian to the Campanian (Gil et al.
Exploring the temporal structure of heterochronous sequences using TempEst (formerly Path-O-Gen).
With the exception of several probably heterochronous, stratigraphically and geographically restricted horizons, the dark shales of the Sarka Formation are usually quite sparsely fossiliferous.
Sections theorize on bird evolution as driven by heterochronous developmental pathways, and discuss cranial kinesis.
In the future, the frequency of heterochronous overlapping cancer is expected to increase with the aging society in Japan.