mare, mari-, mar- +

(Latin: sea; ocean)

A mari usque ad mare (Latin phrase)
From the sea all the way to the sea.

The motto of the Dominion of Canada; also meaning, "From sea to sea."

In fact, for both Canada and the United States, the "seas" are really oceans. Although the Romans had the word oceanus, which they borrowed from the Greek okeanos, in Homer, it was considered to be a river that surrounded the earth.

The word mare was used more often to mean "ocean". Who could know the difference between oceans, seas, and rivers back in ancient Rome or even in Homer's time? In fact, there are many, even in our current existence, who cannot explain the differences.

aquamarine (s) (noun), aquamarines (pl)
1. The greenish color of sea water: The tint of aquamarine of the Pacific Ocean stunned all the visitors on board the ferry boat.
2. A transparent blue-green variety of beryl, used as a gemstone: At the museum, Time viewed a crown that was set with aquamarines and must have been worth a fortune!
fluviomarine (adjective) (not comparable)
1. Concerning the inhabitants of rivers and seas: Especially fish are considered to be fluviomarine creatures that exist in both streams and oceans.
2. Referring to sediments formed by the combined action of rivers and seas: The accumulation of rocks, stones, and broken shells, known as fluviomarine deposits, filled the mouth of the river.
geological oceanography (s) (noun) (no pl)
The study of the features of the floors and margins of the oceans; marine geology; submarine geology: Geological oceanography encompasses descriptions of topography, composition of bottom matter, mutual action of sediments and rocks with air and sea water, the results of motion in the mantle on the sea floor, and activity of wave energy in the submarine crust of the Earth.
juxtamarine (adjective), more juxtamarine, most juxtamarine
Pertaining to something situated by the sea: The rentals were all juxtamarine dwellings located directly at the seaside.
Abbreviation of marine.
mare (s) (noun), maria (pl)
1. Any of the several large, dark plains on the moon and Mars.

    A reference to one of the large dark expanses of basalt on the moon and Mars, many of which fill impact basis; for example,

  • Mare Nubium, "Sea of Clouds".
  • Mare Serenitatis, "Sea of Serenity".
  • Mare Tranquillitatis, "Sea of Tranquility".

So named because Galileo believed that the lunar features were seas when he first saw them through a telescope.
2. Etymology: from Latin mare, "sea".

3. A fully mature female horse or other equine animal: Little Susi was finally old enough to ride on her mare!
4. Etymology: from Middle English mere, mare; from Old Saxon mere to Old English mearh, "horse"; so, it is obvious that this mare is not related to the other mare referring to the "sea".

mare clausum (s) (noun), mare clausa (pl)
A Latin expression indicating that a navigable body of water, such as a sea, is under the jurisdiction of one nation and closed to all others: In the book that James was reading, the ocean was a mare clausum. and to be used only by the king's country, and was not passable by any other kingdom.
mare liberum (s) (noun) (no pl)
A Latin expression meaning that a navigable body of water is accessible to all nations; a free sea: Such oceans that are mare liberum provide equal and free passage to all vessels from all over the world.
mare nostrum (s) (noun) (no pl)
A Latin expression meaning "Our sea": Mare nostrum was a Roman term for the Mediterranean to the ancient Romans.

A mare nostrum is a navigable body of water, such as a sea, that is under the jurisdiction of one nation or that is shared by two or more nations.

maremma (s) (noun), maremme (pl)
1. Marshy land near the seashore: Lynn learned about the maremma in Italy which was an unhealthy swampy area near the shore, close to where she was spending her vacation.
2. Etymology: Italian, from Latin maritima, neuter of maritimus, "pertaining to the sea, near the sea"; from mare, "sea".
Maresaurus (proper name)
A “sea lizard” from Middle Jurassic South America.

Named by Z. B. de Gasparini in 1997. It was named to indicate a marine pliosauroid found in the Neuquen Basin, of central-western Argentina.

Named by Argentinian paleontologist Zulma N. Gasparini in 1997.

maricole (verb), maricoles; maricoled; maricoling
To thrive in the sea: Aquatic organisms, both tiny and large, are able to maricole and survive in most oceans and seas.
maricoline (adjective), more maricoline, most maricoline
Descriptive of species inhabiting or dwelling in the sea: Since June was interested in taking a course in oceanography, she bought a book regarding maricoline organisms existing in oceans around the world.
maricolous (adjective) (not comparable)
Relating to organisms that thrive in the sea: Such maricolous invertebrate animals like clams or squids exist successfully in many oceans.

Inter-related cross references, directly or indirectly, involving the "sea" and the "ocean" bodies of water: abysso- (bottomless); Atlantic; batho-, bathy- (depth); bentho- (deep, depth); halio-, halo- (salt or "the sea"); necto-, nekto- (swimming); oceano-; pelago- (sea, ocean); plankto- (drifting); thalasso- (sea, ocean).