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Oct 21 2009   4:10PM GMT

Hyphenation — low cost or low-cost?

Ivy Wigmore Ivy Wigmore Profile: Ivy Wigmore

Which is correct?
Cluster computing can also be used as a relatively______ form of parallel processing.
a. low cost
b. low-cost


Answer: b

Explanation:
Hyphenate such terms when they serve as adjectives, as low-cost does here to modify form.

If cost is serving as a noun, we don’t hyphenate. For example: Cluster computing is sometimes used for parallel processing because of its relatively low cost.

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