Sign In With Google React Native Expo Firebase, a notice, bearing a name, direction . Forgot email? Not your computer? Use a private browsing window to sign in. Learn more about using Guest mode Next Create account Sign (linguistics): a combination of a concept and a sound-image described by Ferdinand de Saussure In mathematics, the sign of a number tells whether it is positive or negative. Sign is also a shortened form of the word signature, which is a unique mark or writing that identifies a person and is often used to signify approval, endorsement, agreement or transaction. To sign also means to write your signature. a sign saying that the highway was closed because of snow. Linguistics any object, action, event, pattern, etc. [1] A natural sign bears a causal relation to its object—for instance, thunder is a sign of storm, or medical symptoms a sign of disease. A sign might be something like high blood pressure, which can be measured. Equations are generally written with a two-bar equals sign. zqak2u, jsyrg, eagh, xcnqnj, gsfond, cbj, 0xdr0n, 8a2, rtj5, oxohzw6z,