Relating to or characteristic of claustrophobia; marked by fear or anxiety in enclosed spaces.
From claustrophobia + -iac (relating to). An alternative adjectival form to claustrophobic, less commonly used but still found in medical and psychological literature.
This unusual suffix variation reminds us that English medical terminology is still evolving—doctors sometimes use it to sound more precise, though 'claustrophobic' has largely won the popularity contest.
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