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Definition of porpoise

porpoise

/ˈpɔːr.pəs/
por · poise

Plural:porpoises
•
Past Simple:porpoised
•
Past Participle:porpoised
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Present Participle:porpoising
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porpoise Lexical Profile

porpoise Game Scores & Validity

• noun

1

Any of several small, toothed marine mammals of the family Phocoenidae, native to coastal waters and oceans worldwide, distinguished by their blunt snouts, spade-shaped teeth, and stocky bodies.

Example

"We watched a small pod of harbor porpoises swim alongside the ferry as we crossed the bay."

• verb

1

To leap in and out of the water in a continuous sequence of short, shallow dives, typical of the swimming pattern of marine mammals and certain penguins.

Example

"The penguins were porpoising through the icy waves to gain speed and escape a pursuing leopard seal."


2

To move with a rhythmic pitching motion, alternately rising and falling (especially of a boat in rough seas or an aircraft experiencing aerodynamic instability).

Example

"The small speedboat began to porpoise violently as it hit the choppy wake of the larger vessel."

Synonyms
View all synonyms for porpoise

Word Nuance & Usage

The noun 'porpoise' is frequently confused with 'dolphin'; however, porpoises belong to a distinct taxonomic family and are characterized by blunt snouts, spade-shaped teeth, and stockier bodies, unlike the elongated beaks of dolphins.

• Rhymes for porpoise

Word Origin & Etymology

From Middle English 'porpeys', borrowed from Old French 'porpois', which traces back to Medieval Latin 'porcopiscis', literally meaning 'pig fish' (from Latin 'porcus' for pig and 'piscis' for fish).

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


Wordmom. (2026). Definition of Porpoise. In Wordmom Dictionary. Retrieved Oct 19, 2026, from https://wordmom.com/dictionary/porpoise
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