from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. That part of the sea out of sight of land.

from the GNU version of the Collaborative International Dictionary of English

  • A sea open to all nations. See mare clausum.


Sorry, no etymologies found.


  • Far out in the open sea towards heaven's impalpable periphery the loyal legions of the royal dominions stand with stately mien and awful muteness, while a thousand suns peep up from the horizon, uniting their blended splendors in graduating zones of light as if pinned together by the sheeny tails of comets and veiled with the radiance of the morning stars.

    Autobiography, sermons, addresses, and essays of Bishop L. H. Holsey, D. D.,

  • Seaplane operations in the open sea were inherently difficult: any combination of light wind, fog, and rough seas hampered takeoff.

    Castles of Steel

  • If he made a half turn to his left, he could see Long Island, the farms and houses of Brooklyn Village at the foot of the Old Ferry Road, and out to the open sea beyond Gravesend.

    City of Glory

  • Intermittent depth charges all night as our ship dashed and pounded across the open sea toward Formosa.

    Blood Brothers

  • A number of ships on the open sea were, for the time being, comparatively safe, mainly because they were over deep ocean; in this way part of the Royal Navy was saved and was able then to break through the newt blockade of Malta and gather over the depths of the Ionian Sea; but even these units were soon sought out by the newts in their mini-submarines and sunk one by one.

    The War with the Newts

  • Tullibardine pursued for sixty miles into the open sea before he turned back.

    Mary Queen Of Scotland And The Isles

  • Visibility remained a problem: “Although out in the open sea there was maximum visibility and a bright sun shone down warmly on a sea smooth as a pond, the eastern horizon was shrouded in sea mist and even with the aid of a telescope no movement was discernible,” said a Warspite midshipman in the spotting top.

    Castles of Steel

  • From their separate stations in Philadelphia and Baltimore, Morris and Richard Henry Lee schemed constantly to deploy the few armed vessels of the Continental Navy to open sea lanes and escort cargo ships, but to little effect.

    Robert Morris

  • After two days of open sea and head winds, the next anchorage was in Port San Pedro, a very beautiful bay opening on the north side of Corcovado Gulf, with snow mountains in full sight; the Peak of Corcovado and a wonderfully symmetrical volcanic mountain, Melimoya, white as purest marble to the summit, were clearly defined against the sky.

    Louis Agassiz His Life and Correspondence

  • Noonday on the open sea within a few degrees of the Equator is apt to be oppressively warm; and our two travelers were now airily clad in suits of dazzling white linen, having laid aside the chain-armour which they had found not only endurable in the cold mountain air they had lately been breathing, but a necessary precaution against the daggers of the banditti who infested the heights.

    A Tangled Tale


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