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Verb: fossilise  'fó-su,lIz
Usage: Brit (N. Amer: fossilize)
  1. Convert to a fossil
    "The little animals fossilised and are now embedded in the limestone";
    - fossilize
  2. Become mentally inflexible
    - fossilize

Derived forms: fossilises, fossilised, fossilising

Type of: age, convert, get on, maturate, mature, senesce

Encyclopedia: Fossilise