1
: the sea as a route for travel
also
: an ocean traffic lane
2
: a moderate or rough sea
3
: a deep inland waterway that admits ocean shipping
Examples of seaway in a Sentence
Recent Examples on the Web
An outlier among alligators Since the mid-19th century, fossils of Deinosuchus have been found on both sides of the ancient seaway and belong to at least two species.
—
Mindy Weisberger, CNN Money, 23 Apr. 2025
And its efforts to avoid Western sanction enforcement are raising environmental and navigational risks in crowded seaways.
—Dominique Soguel, The Christian Science Monitor, 12 Feb. 2025
When the landmass began to break apart, internal seaways brought some more moisture and humidity to a previously dry climate.
—Laura Baisas, Popular Science, 27 Nov. 2024
Aside from China and the Philippines, Vietnam, Malaysia, Brunei and Taiwan have had overlapping claims in the busy seaway, a key trade route where many fear a major escalation of the conflicts could draw U.S. forces on a collision course with China military.
—San Diego Union-Tribune, 10 May 2024
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Mindy Weisberger, CNN Money, 23 Apr. 2025
And its efforts to avoid Western sanction enforcement are raising environmental and navigational risks in crowded seaways.
—Dominique Soguel, The Christian Science Monitor, 12 Feb. 2025
When the landmass began to break apart, internal seaways brought some more moisture and humidity to a previously dry climate.
—Laura Baisas, Popular Science, 27 Nov. 2024
Aside from China and the Philippines, Vietnam, Malaysia, Brunei and Taiwan have had overlapping claims in the busy seaway, a key trade route where many fear a major escalation of the conflicts could draw U.S. forces on a collision course with China military.
—San Diego Union-Tribune, 10 May 2024
See All Example Sentences for seaway
Cite this Entry
“Seaway.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/seaway. Accessed 6 May. 2025.
Copy CitationKids Definition
seaway
noun
sea·way
-ˌwā 
1
a
: a route for travel on the sea
b
: an ocean traffic lane
2
: a rough sea
3
: a deep inland waterway that admits ocean shipping
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