1.
based on.
To base one thing on another is to use the second as the basis for the first, and it is frequently used in the passive, as in arguments based on statistics. Avoid using based on as an unattached conjunction without a clear antecedent (☒The Prime Minister will be judged based on these events: better...will be judged on criteria based on these events, or...will be judged according to these events). Avoid it especially in initial position:
Based upon the US Democratic Party's new policy, I'd appeal to the world via the UN to assist us in withdrawing troops from Iraq—Independent, 2007.In recent usage based around has become a common and illogical fudge, and should be avoided: The article is based around a concept which occurred to him as he lay on a Scilly Isles beach in 2000—news reports, British English 2003 [Old English (up to 1150)C].
2.
-based.
In the 20th century, the participle based is commonly used in combination with a noun, meaning 'based on...', as in community-based, land-based, program-based (in computing), research-based, rule-based, science-based, technology-based, etc.
| base, basis, basalt, baroque | |
| basic, basal, basically, basis |
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