What does "polydactylous" mean?

Having more than the normal number of digits.

What is a synonym for "polydactylous"?

Common synonyms include: polydactyl.

adj

adj ·Rare ·Advanced level

Adjective

1
Having more than the normal number of digits. not-comparable
"A polydactylous cat may have six or more toes on its paw."

Adjective

1
of or relating to a person (or other vertebrate) having more than the normal number of digits wordnet

"A polydactylous cat may have six or more toes on its paw."

From polydactyl + -ous.