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I found the following sentence on one of BBC articles that I've read. Thought, I could understand the meaning of the sentence without roughly, I cannot understand the meaning of "as-yet". Therefore, I would really appreciate it if someone could let me know what is the meaning of "as-yet". In addition, though I tried to find the meaning of this on the dictionaries, I couldn't find the word. Therefore, I guess this might be associated with some grammatical point that I don't know combining two prepositions.


Theoretical physicists believe that it might also be associated with an as-yet undiscovered sub-atomic particle. There is more than one concept for what this hypothetical particle might be. One is called a leptoquark, another is the Z' boson (Z-prime boson).

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dileepaas-yet

as-yet: up to this (current) point in time.

This is indicating that they have been searching for it and expect that the particle will be discovered soon.

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Here is a Merriam Webster dictionary definition.

as yet

: up to the present or a specified time there are as yet few clues
https://www.merriam-webster.com/dictionary/yet The expression consists of two words. It is not usually written with a hyphen. an as yet undiscovered sub-atomic particle.This means a sub-atomic particle that up to the present time has not been discovered. Clive
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Comments  
dileepaI cannot understand the meaning of "as-yet".

The hyphenation is debatable, but leaving that aside, "as yet" is an idiomatic expression meaning "until and including now" ( https://dictionary.cambridge.org/dictionary/english/yet?q=yet_1 ). The sentence "Theoretical physicists believe that it might also be associated with an as-yet undiscovered sub-atomic particle." could be paraphrased as "Theoretical physicists believe that it might also be associated with a sub-atomic particle that has not been discovered yet."

"As yet" is often mistakenly expressed as "as of yet".

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