+

Two lines crossed in the middle: one vertical line and one horizontal line.

From a ligature of Latin et (“and”). Compare & and ⁊ of same meaning.

+ (English symbol name plus sign or plus)

1. (arithmetic, algebra) Addition, additive operation.

   3 + 2 = 5

2. (mathematics) Explicitly indicates that the next number is positive.

   +5 is different from −5

3. (informal) "Or more"; indicates that a number is the minimum quantity or amount.

   This project is going to take 10+ years to complete. (10 or more years)

4. (mathematics) From the positive side.

   ${\displaystyle \lim _{x\to a^{+}}f(x)}$ is the same as ${\displaystyle \lim _{x\downarrow a}\,f(x)}$

5. (mathematics) A disjoint union, a coproduct.
6. (mathematics, logic) An inclusive disjunction.
7. (genetics) A wild type.
8. (botany) A grafted hybrid.^[1]
9. (programming) A string concatenation in some programming languages (that might be ambiguous with an additive operation).

   "My name is " + name + ". I am " + age + " years old."

10. (regular expressions) Detects one or more occurrences of the preceding element.

    The string ab+c matches "abc", "abbc", "abbbc", and so on, but not "ac".

11. (chess notation) Check.
    • 2022, “2023 Laws of Chess”, in FIDE‎^[2] (in English), page 23:

      1.e4 e5 2. Nf3 Nf6 3. d4 exd4 4. e5 Ne4 5. Qxd4 d5 6. exd6 e.p. Nxd6 7. Bg5 Nc6 8. Qe3+ Be7 9. Nbd2 0-0 10. 0-0-0 Re8 11. Kb1 (=)

    • 2023 January 13, Leonard Barden, “Chess: Carlsen takes on young guns at Wijk as world champion eyes record”, in The Guardian‎^[3] (in English), archived from the original on 23 January 2023:

      1...Qd3 2 Ne1 Nd2! wins since 3 Nxd3 Rxf1 mate while 3 Qxc7+ Kg6 only delays the end. The best White can do is 3 Qc3+ Qxc3 4 Rxc3 Rxe1 when Black also wins the Bf1 and will be two pieces up.

    • 2023 August 12, GM Noël Studer, “Mastering Chess Puzzles: The Comprehensive Guide to Effective Problem Solving”, in Next Level Chess‎^[4] (in English):

      The correct answer is 1.Rxf6 Rxf6 2.Rf1 Raf8 3.Qg5 Kg7 4.Nh5+
      Other sub-variations work, such as playing 2.Qg5 then 3.Rf1 or playing 4.Bxf6+ first before playing 5.Nh5+.

12. A placeholder standing for the international call prefix in phone numbers.

    Sure, call me if you want. My number is +496919725.

13. (medicine) An affirmative result from a laboratory test.
14. (electricity) An anode.
15. Indicating north.
16. (music) Augmented.
17. (Christianity) Written by a bishop before his signature.

• The + symbol is called the plus sign in English (see there for translations).

• For quotations using this term, see Citations:+.

• ﬩
• (symbol for and): &, ⁊

• (antonym(s) of “addition or positiveness”): - or −, sometimes ÷

• A+, B+, O+, AB+, Rh+
• A+, B+, C+, D+
• +ve
• +1

• plus sign
• (chess): ++
• ⧺
• ⧻
• 十

+

1. (computing) When placed between key names, indicates that they should be pressed simultaneously.

   Press Ctrl+C to copy!

2. (siglum, informal) and

For quotations using this term, see Citations:+.

+

1. (text messaging, slang) more

+

1. Abbreviation of and.

   Second course: sauvignon blanc, chicken + rice, ratatouille niçoise

   1. (Stenoscript) Abbreviation of and.
      • 1950, Dana F. Kellerman, chapter 1, in Catherine M. Lang, Elizabeth J. Ryan, editors, Stenoscript abc Shorthand, SRA edition, published 1968, Review IV, page 7:

        I h a kr. i i a gd kr wn i rn. i hz a gd mtr. i i g bd, I k h i fx. i e b i, e k pa e f i. i I c a btr kr, I k b i. I h sm mne + I k pa fr i.

        I have a car. It is a good car when it runs. It has a good motor. If it goes bad, I can have it fixed. If he buys it, he can pay me for it. If I see a better car, I can buy it. I have some money, and I can pay for it.

2. (slang) Used to connect two elements: and, plus.
   • 2024 September 16, Mehera Bonner, “Wondering What Dan Levy Is Making for Hosting the 2024 Emmys? Here's a Deep Dive on His Net Worth!”, in Cosmopolitan‎^[5]:

     Despite winning every award under the sun and being critically acclaimed + beloved, Schitt's Creek didn't become household-name-levels of popular until its last few seasons.

• In stenoscript, this is only used for the conjunction 'and'. The sound sequence /Vnd/ is written —.

+

1. (neologism, Covid-19) denotes the immigration policy where the preceding number is the number of days required for quarantine and the following number is the number of days for medical monitoring

   7+3

   (the policy of) 7 days of quarantine followed by 3 days of medical monitoring