Remarkably low condensation temperature
Remarkably-low condensation temperature?
The focus of remarkable is that it is such a low temperature. We are having an office disagreement and any help is much appreciated.
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The wikipedia entry backs up what the style guide I use says:
In the 19th century, it was common to hyphenate adverb–adjective modifiers with the adverb ending in -ly. However, this has become rare. For example, wholly owned subsidiary and quickly moving vehicle are unambiguous, because the adverbs clearly modify the adjectives: "quickly" cannot modify "vehicle". However, if an adverb can also function as an adjective, then a hyphen may be or should be used for clarity, depending on the style guide.
No hyphen is needed. It is fine as it is.
However, such a sentence structure/ construction is not for technical writing:
A condensation temperature that is remarkably low...
That will be easier on the reader.
[Not that you will not come across complicated/ ambiguous writing in techLit. Just avoid it.]
The Associated Press Stylebook says this about hyphens with compound modifiers:
When a compound modifier — two or more words that express a single concept — precedes a noun, use hyphens to link all the words in the compound except the adverb very and all adverbs that end in -ly. ... The principle of using a hyphen to avoid confusion explains why no hyphen is required with very and -ly words. Readers can expect them to modify the word that follows.
Even if you were not to agree with the AP style in this case, ask yourself what else (besides low) the word remarkably would modify. If there is no ambiguity, the hyphen is not needed.