a length of film containing a series of related transparencies for projection on a screen.

Origin of filmstrip

First recorded in 1925–30; film + strip2 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for filmstrip

Historical Examples of filmstrip

Word Origin and History for filmstrip

1930, from film (n.) + strip (n.).

Online Etymology Dictionary, © 2010 Douglas Harper