A positive quantity.
"The final score was ten plus five, making a total of fifteen points."
In plain English: A plus is an extra advantage or benefit that makes something better than it otherwise would be.
"The total cost was twenty dollars plus tax."
Usage: Use "plus" as a noun only in mathematical contexts to refer to a positive number or value. In general conversation, people often mistakenly use it as a synonym for "in addition," but the correct term for that meaning is the preposition "plus."
To add; to subject to addition.
"They decided to add a bonus round to the game, which was truly plus for everyone's enjoyment."
In plain English: To add something to an existing amount or list.
"The new software update adds several useful features to our existing app."
Usage: Use "plus" only in mathematical contexts or informal speech where it functions as a synonym for "add." In standard written English, avoid using it as a verb and instead say "to add" or "to include."
on the positive side or higher end of a scale
"a plus value"
"temperature of plus 5 degrees"
"a grade of C plus"
Being positive rather than negative or zero.
"When I checked my bank account, I found a surprising plus of fifty dollars instead of the zero balance I expected."
In plain English: Plus means positive, good, or above average.
"That's a plus for anyone looking for a quiet place to work."
Usage: Use "plus" as an adjective only when describing quantities that are mathematically greater than zero, such as in "a plus balance." In everyday speech, it is far more common to use "positive" to describe a favorable attitude or outcome rather than the mathematical concept of being above zero.
And; sum of the previous one and the following one.
"The total cost for dinner was twenty dollars plus tax, which came to twenty-two dollars."
And also; in addition; besides (which).
"I'd love to join you for dinner plus bring a dessert from home."
The word plus comes from the Latin term plūs, which means "more." It entered English to express an additional amount or a positive value.