Definition of positive sign in English:

positive sign

Pronunciation /ˈpäzədiv/ /ˈpɑzədɪv/ /ˈpäztiv sīn/ /ˈpɑztɪv saɪn/

noun

Mathematics
another term for plus sign
‘The negative and positive signs on the ordinate mean, respectively, underestimation and overestimation of the expected values.’
  • ‘First, the negative and positive signs for values of delta mentioned above do not tell the full story.’