The phrase "a hyphen for" is correct and usable in written English.
It can be used when discussing the purpose or function of a hyphen in writing, particularly in relation to word formation or punctuation.
Example: "In the phrase 'well-known author,' the hyphen is used to create a compound adjective, serving a hyphen for clarity."
Alternatives: "a hyphen to" or "a hyphen used for".
Amazon made auto scaling available on AWS back in 2009 (unlike Google, Amazon prefers "auto scaling" over "autoscaling") and Microsoft launched Azure auto-scaling (it prefers to use a hyphen) for web sites, cloud services and virtual machines last June.
For example a protein with a representation 1001 − 0001 − 11 (separated by a hyphen for ease of understanding) implies that it can bind to the promoter regions for genes 1 and 4 and that while the regulatory action is negative for gene 1, it is positive for gene 4 (since the first and fourth bits for the second half of the bitstring are 0 and 1 respectively.
Don't use a hyphen for old or antiquated compound words.
Though the rules for when to use numerals and when to spell out numbers can vary from style guide to style guide, many grammatical sources will recommend using a hyphen for two-word numbers below one hundred.
One could argue about whether a hyphen is needed for clarity, but in any case, we should be consistent.
In this letter, the term eco-genomics (here still with a hyphen) was used for the first time in the Netherlands.g The ambition of Gnettic was. to develop a set of genomics-based tools that can be used to analyze ecological systems, identify possible threats of contamination to the environment and human health, and to guide industrial production processes towards sustainable development" (Idem, 3).
Here is an example of a hyphen being used for prefixes: She frequently accused her ex-boyfriend of being completely self-absorbed.
No need for a hyphen here.
No need for a hyphen in a compound modifier with an adverb ending in "ly".
