noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A line (on a map, etc.) joining places where a particular biological phenomenon is exhibited in the same way, such as where plants flower at the same time (an isanthesic) or where the same proportion of clines is found.
2. 2
   a line indicating biological events occurring with coincidence such as plants flowering. wordnet

Synonyms

All synonyms

isophane

Etymology

From iso- + the first element of phenology, the word having been first used to refer to phenological phenomena.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.