oceanic

American  

[oh-shee-an-ik] / ˌoʊ ʃiˈæn ɪk /

adjective

1. of, living in, or produced by the ocean.

   oceanic currents.

2. Oceanography. of or relating to the region of water lying above the bathyal, abyssal, and hadal zones of the sea bottom.

3. immensely large; vast.

   an oceanic expanse of stars.

4. (initial capital letter) of or relating to Oceania, its peoples, or their languages.

---

oceanic ¹ British  

/ ˌəʊʃɪˈænɪk /

adjective

1. of or relating to the ocean

2. living in the depths of the ocean beyond the continental shelf at a depth exceeding 200 metres

   oceanic fauna

3. huge or overwhelming

4. (of geological formations) of volcanic origin, arising from the ocean

   oceanic islands

---

Oceanic ² British  

/ ˌəʊʃɪˈænɪk /

noun

1. a branch, group, or subfamily of the Malayo-Polynesian family of languages, comprising Polynesian and Melanesian

---

adjective

1. of, relating to, or belonging to this group of languages

2. of or relating to Oceania

oceanic Scientific  

/ ō′shē-ăn′ĭk /

1. Relating to the ocean.

2. Relating to the ocean waters that lie beyond the continental shelf and exceed 200 m (656 ft) in depth.

3. Compare neritic See more at epipelagic zone

---

Other Word Forms

• preoceanic adjective
• unoceanic adjective

Etymology

Origin of oceanic

First recorded in 1650–60; from Medieval Latin ōceanicus, equivalent to Latin ōcean(us) + -icus adjective suffix; ocean, -ic

Explanation

Things that have something to do with the ocean are oceanic. Oceanic water comes from the sea, and oceanic study focuses on creatures that live in the ocean and other ocean-related topics. An oceanic vessel is a fancy way of referring to a ship that sails on the sea, and oceanic tides are the constantly rising and falling levels of ocean water. You can also use this adjective to mean, "as enormous as the ocean," like an oceanic success or an oceanic pile of work to do before the end of the day. Oceanic comes from the Greek okeanos, which in ancient Greece referred to an imagined "endless river surrounding the land."

Example Sentences

The vast, oceanic, planetary gobs of money to build out AI, which investors were supposed to provide without immediate return, will have to come from somebody else—actual customers.

From The Wall Street Journal • Mar. 29, 2026

Their vibrant, jam-packed settings depict anything from an oceanic rave to a rainbow-hued big top performance to a joyride through the cosmos.

From Los Angeles Times • Mar. 25, 2026

As phytoplankton grow, they remove large quantities of carbon dioxide from the atmosphere through photosynthesis, making this region the world's largest oceanic sink for the climate warming gas.

From Science Daily • Feb. 28, 2026

Greenland’s geopolitical relevance—for oceanic and space domination, for missile defense, for critical-mineral extraction, for oil and gas—has only grown.

From The Wall Street Journal • Jan. 15, 2026

The high oceanic temperatures will release more water vapor into the air, increasing cloudiness, shielding the Earth from sunlight and delaying the end a little.

From "Cosmos" by Carl Sagan