Relating to or characteristic of the Aphthartodocetae heresy and their beliefs about Christ's incorruptible nature.
From Aphthartodocetae + -ic (adjective suffix). The term converts the noun referring to the heretical sect into an adjective describing their theological positions and doctrines.
This is a perfect example of how religious and theological terminology gets layered with Greek roots—each syllable represents an entire theological concept condensed into one barely-pronounceable word.
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