addition sign

addition sign

[ə′di·shən ‚sīn]
(mathematics)
The symbol +, used to indicate addition. Also known as plus sign.
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References in periodicals archive ?
The symbol for iffinity is a capital O with an addition sign in it: [symmetry].
The teacher finished the lesson on the first day by recording examples of the children's measurements and showing them how they could put an addition sign between the fractional amounts to show that the two numbers were combined.
First, we will test whether activity in fronto-parietal brain regions can be automatically triggered by the simple visual presentation of an addition sign, and whether this automatic activation may facilitate arithmetic performance in adults proficient in arithmetic.
He added: "The proposed scheme consists of red surfacing and carriageway markings, in addition signs are to be installed to highlight the entrance to the housing development.
There are in addition signs in red put up during the rutting season explaining it is dangerous and warning people not to approach the deer.