- Occurring between two others; as in a pulse tracing, an upstroke interposed between two normal pulse beats, or a neuron (intercalated or internuncial) with short processes that connect one neuron with another in a circuit or pathway.
- In fungi, located in a hypha or between hyphal segments, not at a hyphal terminus.
[L. intercalarius, concerning an insertion]
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Examples: glitazone, GI cocktail, etc.