sub-aqueous

English

Etymology

From sub- +‎ aqueous.

Adjective

sub-aqueous (not comparable)

  1. Alternative form of subaqueous.
    • 1948 September and October, “Weekend Works in the Severn Tunnel”, in Railway Magazine, page 298:
      The tunnel is 4 miles 628 yd. long, and is the longest tunnel on a British main-line railway, and the longest sub-aqueous tunnel in the world.
    • 2012, Andrew Martin, Underground Overground: A passenger's history of the Tube, Profile Books, →ISBN, page 87:
      [...] he'd been hoping to build a bridge over the River Nova in St Petersburg. The Russians would eventually decide to go under the river, but not before Brunel had shown the way, by building the first sub-aqueous tunnel in the world.
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