Mathematics. Greater than zero; = positive, adj. 6. Obsolete.

Of a quantity: less than zero; to be subtracted from another quantity, or taken as indicating a subtraction from zero; marked by the minus sign.

Used to form adjectives with the sense ‘partly negative and partly ——‘, as †negativo-affirmative, negativo-positive.

Of a quantity: greater than zero; to be added to another quantity, or taken as indicating an addition to zero; marked by the plus sign. Also in…

Mathematics. Of a number: not distinguished as positive or negative; written without a (plus or minus) sign. Cf. unsigned, adj.2

Of a number: having a (plus or minus) sign; distinguished as positive or negative. Cf. unsigned, adj.2, signless, adj. 3.

Of a number: without a plus or minus sign, or a bit representing this.