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under- +‎ layer


underlayer (plural underlayers)

  1. A layer that is below another layer.
  2. (mining) A perpendicular shaft sunk to cut the lode at any required depth.
    (Can we find and add a quotation of Weale to this entry?)
  3. One who underlays.

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for underlayer in
Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.)


underlayer (third-person singular simple present underlayers, present participle underlayering, simple past and past participle underlayered)

  1. To form a layer beneath another