Longman Dictionary of Contemporary English - plus

~1 prep 1 used when one number or amount is added to another  (Three plus six equals nine. (3 + 6 = 9) | The book has 250 pages, plus 28 pages of appendices. | All employees are paid $3 an hour plus $1.50 for time worked on the weekend.) 2 and also  (The unit deals with all lung and heart conditions, plus many other lesser ailments.) 3 plus four/six etc technical four, six etc more than zero  (- opposite minus1) ~2 n 1 informal something that gives you an advantage in a situation  (Knowledge of French and Spanish could be a plus in this job.) 2 a sign (+) showing that you should add two or more numbers together, or that a number is more than zero ~3 adj 1 plus factor/point an advantage or favourable feature that something has  (Another plus point for the VHS system is that you can record three or four hours of material onto one tape.) 2 10/50 etc plus more than a particular amount, number or level  (She earns $50,000 a year plus. | All the children in the class are six plus. (=more than six years old)) 3 only before noun greater than zero  (Daytime temperatures vary between minus 5° and plus 12°.) ~4 conjunction and also  (He's been studying for the exams all week, plus he's been working in a bar at night. | It's an old, draughty house. Plus the plumbing's not fixed yet.)