295. Numbers

See also 262. MATHEMATICS .

abacist

a skilied user of the abacus.

acalculia

Psychiatry. an inability to work with figures; a mental block concerning calculation.

arithmancy

a form of divination involving numbers. Also called arithmomancy .

arithmomania

1. an obsession with numbers.

2. a compulsion to count things.

hebdomadism

a belief that the number seven is sacred, as in ancient Baby-Ion.

numerology

a system of occultism based upon numbers. — numerologist, n. — numerological, adj.