syndactyl
Concise Oxford English Dictionary © 2008 Oxford University Press:
syndactyl /sɪnˈdaktɪl/
▶adjective Medicine & Zoology having digits wholly or partly united, either naturally (as in web-footed animals) or as a malformation.
– derivatives
syndactyly noun.
syndactyly noun.
'syndactyl' also found in these Oxford entries:

