Shipping Glossary: Terms & Definitions

DIM Weight

A pricing method based on package size rather than actual weight

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Cubic Pricing

A USPS pricing tier based on package volume instead of weight

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Commercial Plus Pricing

The deepest USPS discount tier for high-volume shippers

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USPS Ground Advantage

USPS's standard ground shipping service with 2-5 day delivery

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Flat Rate Shipping

A shipping method where the price is fixed regardless of weight or distance

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Zone-Based Pricing

A shipping rate structure where cost increases based on the distance between origin and destination

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Shipping Insurance

Coverage that protects against lost, stolen, or damaged packages during transit

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Tracking Number

A unique identifier assigned to a package that allows you to monitor its delivery progress

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USPS Media Mail

A low-cost USPS service exclusively for shipping books, media, and educational materials

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Signature Confirmation

A delivery service that requires the recipient to sign for a package upon delivery

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Return Label

A prepaid shipping label that allows the recipient to send a package back to the original sender

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Shipping Label

A printed label containing all the information needed for a carrier to deliver a package

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Customs Form

A mandatory declaration document required for shipping packages internationally

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HAZMAT Shipping

The regulated process of shipping dangerous goods like batteries, perfumes, and flammable materials

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Package Tracking

The system that lets you monitor a package's location and delivery status in real time

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