What does "bipack" mean?

The process of loading two reels of film into a camera, so that they both pass through the camera gate together, formerly used for visual effects and as a subtractive colour process.

What is a synonym for "bipack"?

Common synonyms include: backing, bipacking, cartridge, dope, emulsion, film.

Bipack

noun, verb

noun, verb ·Rare ·Advanced level

Definitions

Noun

1
The process of loading two reels of film into a camera, so that they both pass through the camera gate together, formerly used for visual effects and as a subtractive colour process. uncountable

Verb

1
To load two reels of film in this manner.

Synonyms

All synonyms

backing bipacking cartridge dope emulsion film

Etymology

From bi- + pack.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.