based

American  

[beyst] / beɪst /

adjective

1. having a specified object or material as its base or foundation or as its primary constituent (often used in combination).

   Our house was one of the three stone-based houses of that era, built by my maternal grandfather.

2. established, grounded, or focused on a specified principle or belief, fact, method, etc. (often used in combination).

   It’s a culturally based phys ed curriculum that uses Indian traditions and values to teach healthy lifestyle habits.

   There are a number of promising evidence-based treatment modalities to address depression.

3. having a specified place as its primary location or headquarters; stationed or situated (often used in combination).

   A centrally based Houston media agency is looking for a Digital Account Manager to help with a key communications client.

   The Chicago-based HIV/AIDS organization provides housing, healthcare, and substance abuse programs for its clients.

4. having a specified origin or source (often used in combination).

   They want to replace animal-based foods with plant-based milks and vegetable protein.

5. Slang. true to one’s self or secure in one’s beliefs regardless of what others think, especially when those beliefs fall outside of the mainstream.

   Her presentation was so based—did you see the teacher's expression? Priceless!

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interjection

Slang.

1. (used to express approval or respect, especially in response to a social media post).

   Based. At least somebody shows some spine on this forum.

verb

1. the simple past tense and past participle of base.

Other Word Forms

• unbased adjective
• well-based adjective

Etymology

Origin of based

First recorded in 1610–20; base ¹ ( def. ) + -ed ² ( def. )

Example Sentences

Dr. Anna Truzzi, now based at Queen's University Belfast and a co-author on the paper, emphasized how recent advances made the research possible.

From Science Daily

The difference amounts to five extra survivors per 100 patients and could equal as many as 115 additional lives saved each year based on the service's typical caseload.

From Science Daily

But the company's methods are "based on non-transparent rules", according to Germany's Federal Cartel Office, adding that it was not clear to third-party retailers how price caps were determined.

From Barron's

To entertain and distract herself while going through a divorce, Erika Acheson used Anthropic’s Claude to build a bot that generates images based on prompts from her and her friends.

From The Wall Street Journal

The S&P 500’s valuation, based on reliable, long-term measures like the Shiller P/E ratio, is already up to late-1999 levels.

From The Wall Street Journal