24/7, 24×7
Don’t use. Instead use 24 hours a day, seven days a week.
For more information, see Dates and times.
2D
Abbreviation for two-dimensional. Spell out the first mention of the term as two-dimensional; on subsequent mentions, use 2D.
Always hyphenate two-dimensional. Don’t hyphenate the abbreviation as 2-D.
For more information, see Abbreviations.
3D
Abbreviation for three-dimensional. Spell out the first mention of the term as three-dimensional; on subsequent mentions, use 3D.
Always hyphenate three-dimensional. Don’t hyphenate the abbreviation as 3-D.
For more information, see Abbreviations.
