Definition

Verb

  • To throw cargo, stores, or gear overboard.

Origin

Derived from the noun jetsam.

Comments

A fairly common word nowadays. Used in both the maritime and aviation fields. Sailors/ships can jettison cargo or gear and aircraft can, as well. (e.g. a combat aircraft jettisoning external fuel tanks when empty.)

References

Rogers, J.G. (1985). Origins of Sea Terms. Mystic Seaport.

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