Definition of celloidin in US English:

celloidin

noun

Chemistry
  • A preparation of pyroxylin (nitrocellulose) in ether and alcohol, used chiefly in microscopy for embedding specimens of tissues so that sections may be prepared.

Origin

Late 19th century; earliest use found in Journal of the Royal Microscopical Society. From German Celloidin from Cell- (in Cellulose) + -oid -oid + -in -in.

Pronunciation

celloidin

/sɛˈlɔɪdɪn/