substantially equivalent

USAGE SUMMARY

The phrase "substantially equivalent" is correct and usable in written English.
It is typically used in legal, scientific, or technical contexts to indicate that two items, products, or concepts are similar enough in function or effect to be considered the same for practical purposes. Example: "The new product is deemed substantially equivalent to the existing model, meeting all necessary safety and performance standards."

✓ Grammatically correct

News & Media

Science

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

54 human-written examples

There is also doubt that ObTape really was substantially equivalent.

The New York Times

ObTape was deemed substantially equivalent to an existing sling, which in turn had been deemed substantially equivalent to an older sling.

The New York Times

The FDA has ruled that they are substantially equivalent to conventionally grown varieties.

The Guardian - Opinion

Democrats insist that the state laws must be at least substantially equivalent to the federal standards.

The New York Times

Assurance of coverage "substantially equivalent" to U.C. was downgraded to an "industry standard" in 2008.

The New York Times

So lawmakers provided the quick review process for any new product deemed "substantially equivalent" to something already on the market.

The New York Times - Health

In a report a fortnight ago, it claimed the treaty was substantially equivalent to the rejected constitution.

The Guardian

Companies may apply for a fast track review of new products that are "substantially equivalent" to earlier products.

The New York Times - Health

PrePex was cleared by the F.D.A. because it was judged "substantially equivalent" to the SmartKlamp, Ms. Fuerst said.

The New York Times - Health

For relatively uncomplicated devices like a vaginal sling, manufacturers can simply show that their products are "substantially equivalent" to similar devices already on the market.

The New York Times

But when viewed in its entirety, he added, Mr. Klein's "education, training, background and experience are substantially equivalent to the certification requirements set forth in law".

The New York Times

Expert writing Tips

Best practice

In regulatory contexts, be aware that the term "substantially equivalent" can trigger specific approval pathways or legal interpretations. Always cross-reference the relevant regulations or guidelines.

Common error

Don't mistake "substantially equivalent" for "identical". The phrase implies a high degree of similarity, but not necessarily a complete match. Be clear about any differences that still exist.

Linguistic Context

The phrase "substantially equivalent" primarily functions as an adjective phrase used to modify nouns, indicating a significant degree of similarity or equivalence. Ludwig indicates the term is grammatically correct and usable in written English.

Expression frequency: Very common

Frequent in

Science

34%

News & Media

54%

Formal & Business

12%

Less common in

Ludwig's WRAP-UP

In summary, "substantially equivalent" is a grammatically sound adjective phrase commonly employed to denote a significant degree of similarity, though not complete identity. As Ludwig highlights, it sees frequent usage in news, scientific, and formal business contexts. While often used in technical fields, remember to define equivalence criteria. Alternatives such as "essentially the same" or "largely comparable" offer slight shades of meaning, allowing writers to choose the most appropriate term for their specific needs.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

essentially the same

Focuses on the core essence being identical, implying key aspects are indistinguishable.

largely comparable

Highlights a significant degree of similarity, though minor differences may exist.

nearly identical

Stresses close resemblance, suggesting minimal perceptible differences.

broadly similar

Indicates general resemblance, allowing for more notable variations.

virtually interchangeable

Emphasizes the capacity to replace one with the other without significant impact.

effectively equivalent

Highlights functional equivalence, where the outcome is the same despite potential differences.

functionally analogous

Stresses similarity in function or purpose, even if the underlying structure differs.

roughly equivalent

Suggests an approximate equivalence, with room for estimation and slight variation.

comparable to a great extent

Emphasizes the significant level of comparability between the two things.

tantamount to

Indicates that the two things are virtually equal in effect or significance.

FAQs

How is "substantially equivalent" used in the context of medical devices?

In the context of medical devices, "substantially equivalent" is often used by the FDA to determine if a new device can be approved through a quicker process (510(k) clearance) if it's similar to an already approved device. It doesn't mean the devices are identical, but they must be safe and effective.

What are some alternatives to the phrase "substantially equivalent"?

You can use alternatives like "essentially the same", "largely comparable", or "nearly identical" depending on the context.

In what situations is it appropriate to use "substantially equivalent"?

It is appropriate to use "substantially equivalent" when you want to convey that two things are very similar in function, effect, or value, but may not be completely identical. This is common in legal, scientific, and technical contexts.

What's the difference between "substantially equivalent" and "exactly the same"?

"Substantially equivalent" implies a high degree of similarity but allows for minor differences, while "exactly the same" suggests there are no differences at all. Choose "substantially equivalent" when precision isn't paramount or when acknowledging minor variations.