ext

adjective1

1. •
   exterior (describing the location of a shot in a film script, etc.)

noun1

1. •
   extension

adjective3

1. •
   Abbreviation of exterior.
2. •
   Abbreviation of external.
3. •
   Abbreviation of extant.

noun2

1. •
   Abbreviation of extension.
2. •
   Abbreviation of extract.

   • Exts. of yeast or Aspergillus niger contain an enzyme […] — 1961