firtree

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English[edit]

gas turbine blade with firtree-type root

Etymology[edit]

fir +‎ tree

Noun[edit]

firtree (plural firtrees)

  1. A fir.
  2. (turbines) The root of a very-high-temperature turbine blade, inserted into a corresponding slot in a disc, resembling in section a simplified image of a fir.

Anagrams[edit]

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