interleave

UK: /ˌɪntəˈliːv/ US: (in′tər lēv′)

Inflections of 'interleave' (v): (⇒ conjugate)

interleaves

v 3rd person singular

interleaving

v pres p

interleaved

v past

interleaved

v past p

WordReference Random House Unabridged Dictionary of American English © 2026

in•ter•leave  (in′tər lēv′), v.t., -leaved, -leav•ing. 

1. Printing to provide blank leaves in (a book) for notes or written comments.
2. Printing to insert blank leaves between (the regular printed leaves).
3. Printing to insert something alternately and regularly between the pages or parts of:
   Interleave the eight-page form with carbon paper.
4. Printing to insert (material) alternately and regularly between the pages or parts of something else:
   Interleave carbon paper between the pages of the form.
5. [Computers.]
   • Computing to arrange (an operation) so that two or more programs, sets of instructions, etc., are performed in an alternating fashion.
   • Computing to mix (data and control characters) in a single operation.

• inter- + leave³ 1660–70

Collins Concise English Dictionary © HarperCollins Publishers::

interleave / ˌɪntəˈliːv/ verb (transitive)

1. (often followed by with) to intersperse (with), esp alternately, as the illustrations in a book (with protective leaves)
2. to provide (a book) with blank leaves for notes, etc, or to protect illustrations