• synonyms


[sem-ee-dohm, sem-ahy-]
  1. half a dome, especially as formed by a vertical section, as over a semicircular apse.
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Origin of semidome

First recorded in 1780–90; semi- + dome
Related formssem·i·domed, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for semidome

Historical Examples

  • Against each side of the square a semidome is set, thus producing a quatrefoil plan at the vaulting level.

    Byzantine Churches in Constantinople

    Alexander Van Millingen

British Dictionary definitions for semidome


  1. a half-dome, esp one used to cover a semicircular apse
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012