Mawson, C.O.S., ed. (1870–1938). Roget’s International Thesaurus. 1922.

Class III. Words Relating to Matter
Section II. Inorganic Matter
2. Fluid Matter
2. Specific Fluids

341. Ocean.

   NOUN:OCEAN, sea, main, deep, blue, brine, salt water, waters, waves, billows, high seas, offing, great waters, watery waste, “vasty deep” “briny deep,” “swan-bath” [A.-S.], “swan-road” [A.-S.], “whale-path” [A.-S.], mere [archaic], herring pond or pond [humorous for Atlantic], hyaline, the Seven Seas, kala pani [Hind.]; wave, tide &c. (water in motion) [See River]; ocean basin; ocean lane, steamer track.
  Neptune, Poseidon, Oceanus, Thetis, Triton, Naiad, Nereid; sea nymph, Siren, mermaid, merman; trident, dolphin.
  OCEANOGRAPHY, hydrography; oceanographer, hydrographer.
   ADJECTIVE:OCEANIC, marine, maritime; pelagic, pelagian [rare], pelagious [obs.]; seaworthy, seagoing; hydrographic or hydrographical, oceanographic or oceanographical; bathybic, cotidal.
   ADVERB:at sea, on sea; afloat; over-sea or over-seas, oceanward or oceanwards.
  1. Great Neptune’s ocean.—Macbeth
  2. Listen! the mighty Being is awake! And doth with his eternal motions make A sound like thunder—everlastingly.—Wordsworth