Relating to or designating organisms that have two distinct body segments or regions separated by a constriction.
From Greek dia- (through) + kranterion (extremity), referring to the division of the body into separate terminal regions. The term evolved in zoological classification to describe specific anatomical arrangements.
This word is so specialized that most biologists themselves have to look it up! It appears in descriptions of certain ancient arthropods and segmented creatures, showing how every organism gets its own ultra-specific scientific label.
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