When such compounds precede a noun, hyphenation usually makes for easier reading.
From the en.wikipedia.org
Soft hyphens are inserted into the text at the positions where hyphenation may occur.
From the en.wikipedia.org
Some dictionaries indicate hyphenation and syllabic stress in the headword.
From the en.wikipedia.org
Dictionaries often use the interpunct or hyphenation point to indicate syllabification.
From the en.wikipedia.org
Spacing, hyphenation, the insertion of apostrophes and capitalisation are all variable.
From the en.wikipedia.org
I salute you and your hyphenation, and vow to stick to the milk of human kindness in future.
From the guardian.co.uk
This kind of hyphenation is most useful when the width of the column of text is very narrow.
From the en.wikipedia.org
Note that the ISBN hyphenation rule-base is a living document.
From the en.wikipedia.org
They banned the extensive use of italics and bold, and the hyphenation of words between lines.
From the nytimes.com
More examples
Word division: division of a word especially at the end of a line on a page
Connecting syllables and words by hyphens
(hyphenate) divide or connect with a hyphen; "hyphenate these words and names"
Hyphenation may refer to:
The inclusion of hyphens; especially, the correct locations of hyphens
(hyphenate) A person with multiple duties or abilities, such as "writer-director", "actor-model", or "singer-songwriter"; To break a word at the end of a line according to the hyphenation rules by adding a hyphen on the end of the line; To join words or syllables with a hyphen
(hyphenated) Referring to something that has been written with a hyphen; Referring to a person who claims more than one nationality or ethnicity, or who expresses recognition of their national or ethnic heritage while also recognizing their current nationality
(Hyphenated) A political term for the distinction between one's national or ethnic ancestry and a-one's American identity, such as Swedish-American. To be "hyphenated" indicates for some people that one's loyalties are divided. Today is common to omit the hyphen, as in Swedish American
The splitting of a word across lines, as an aid to uniform line breaking.