interdigitate
/ˌɪntəˈdɪdʒɪteɪt
/verb [no object]
(Of two or more things) interlock like the fingers of two clasped hands: (as adjective interdigitating) interdigitating metal bars...
- The finger domains can interdigitate into the major groove of the DNA helix.
- The dermal joint between the two cranial regions may be straight and simple, or complex and interdigitating.
- It could be argued that the chains themselves were partially interdigitating.
Origin
Mid 19th century: from inter- 'between' + digit + -ate3.