Latin superstrūctus, past participle of superstruō (“to build upon”); super (“over”) + struō (“to build”). See super- and structure.
superstruct (third-person singular simple present superstructs, present participle superstructing, simple past and past participle superstructed)
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 The imported definitions may be significantly out of date, and any more recent senses may be completely missing.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 “superstruct”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.)