interleave

Short definition from Wiktionary

Verb

1. 1
   To insert (pages, which are normally blank) between the pages of a book.
2. 2
   To intersperse (something) at regular intervals between the parts of a thing or between items in a group.
3. 3
   To allocate (things such as successive segments of memory) to different tasks.

Noun

1. 1
   An interleaved or interspersed arrangement.