English
filmset
From film + set.
Proto-Indo-European *pél-mo- ‘membrane’
Proto-Germanic *filmīn- ‘thin skin, membrane’
Proto-West Germanic *filmīn-
Old English filmen ‘film, membrane, thin skin’
Middle English filme ‘film’
English film
Proto-Indo-European *sed- ‘to sit’
…
Proto-Germanic *satjaną ‘to set’
Proto-West Germanic *sattjan ‘to set’
Old English settan ‘to set’
Middle English setten ‘to seat’
English set
Today it means
verb To typeset by exposing type characters onto photographic film, which is then used to generate printing plates.
Language periods are conventional ranges, not dates for this word.
Etymograph / filmset