Acalculiac is a derived term of acalculia.

Acalculia is a related term of acalculiac.

As nouns the difference between acalculia and acalculiac

is that acalculia is (pathology) the condition of lacking]] basic [[mathematics|mathematical skills caused by a brain injury, or more specifically an injury to the parietal lobe brown, lesley, ed the shorter oxford english dictionary 5th oxford: oxford university press, 2003 while acalculiac is one who is unable to employ basic mathematical skills, often as a medical condition.