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

According to Vamivakas, this approach can measure acceleration more accurately than methods based on traditional light lasers or radio frequency technologies.

From Science Daily

The research team constructed the first evolutionary tree for decapodiformes based on genome sequences from nearly all major lineages.

From Science Daily

All Pulling Together, based in Stonehouse, is a community interest company mainly run by volunteers.

From BBC

When asked if support could go beyond people who receive benefits, Reeves said: "We're looking at ways in which we can support people based on their household income."

From BBC

“They are not just oil and gas based economies,” he says.

From The Wall Street Journal