add-on

American  

[ad-on, -awn] / ˈædˌɒn, -ˌɔn /

noun

1. a device or unit added to equipment or a construction.

   an add-on to a computer;

   a nice add-on to an old house.

2. an extra charge.

   Add-ons for taxes and tour guide fees boosted the price of the vacation to $2,500.

3. an additional item, as a rider or provision.

   This is just another legislative add-on.

4. anything added on.

   Our sable faux fur vest is an easy add-on for dressy or casual occasions.

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adjective

1. being installed or provided as an add-on.

   Add-on packs for this game are just a few dollars.

add-on British  

noun

1. a feature that can be added to a standard model or package to give increased benefits

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Etymology

Origin of add-on

First recorded in 1945–50; noun and adj. use of verb phrase add on

Example Sentences

Recent approvals for conditions such as chronic obstructive pulmonary disease, where Dupixent has been approved as an add-on treatment, “are progressing well and expected to drive steady franchise growth.”

From Barron's

Pricing could be a challenge: Zepbound and Wegovy are both expensive enough on their own, and taking an Arrowhead drug on top of those prescriptions would notionally mean a significant add-on to that price.

From Barron's

Dedicated IP addresses are also available as an add-on if you need a consistent IP for accessing work networks or avoiding CAPTCHAs.

From Salon

And of the other half, who choose traditional Medicare, nearly half get Part D prescription drug plans and “Medigap” add-on plans from private insurance companies.

From Science Daily

The streaming platform launched in 2018 as an add-on for the core Fox News audience and has focused on a handful of programming genres, including faith, family and patriotism, to extend its reach.

From The Wall Street Journal

Related Words

• preservative
• supplement