sign in (or out) - meaning and definition. What is sign in (or out)
Online Dictionary

What (who) is sign in (or out) - definition

Minus-or-plus sign; Plus or minus; Minus-plus sign; Plus-or-minus sign; ±; ∓; +-; -+; Plusminus sign; Plus or minus sign; Plusmn; Plus minus tolerance; ± shorthand; Give or Take symbol; \pm; Minus or plus sign; Minus or plus; U+00B1; Plus-minus symbol; Plus-minus sign; Plus minus sign; ± ± ±

sign in (or out)      
sign in (or out)
sign a register on arrival (or departure) in a hotel or workplace.
day in, day out         
Day in day out; Day In - Day Out; Day in Day Out; Day In Day Out; Day In, Day Out (disambiguation)
continuously or repeatedly over a long period.
  • lanes]] of the highway is via a right turn onto the side road (in this case, by following Goldstein Road to the overpass road, crossing over the highway, then continuing on the overpass road to South Sparrow Lake Road).
  • King's Highway 11, looking south from same overpass. In addition to the unbroken median, this image shows another characteristic of a ''RIRO expressway'': direct right-in/right-out access to driveways (in this case, residential).
RIRO Expressway; Jersey freeway; LILO expressway; RIRO; RIRO expressway; Right-in right-out ramp; Right-in right-out; Right-in/right-out ramp; Right-in/right-out access; RIRO access; RIRO interchange; Left-in/left-out; Right-in/right-out intersection; Right in/right out; Right in, right out; Right-in/right-out expressway; Left-in/left-out expressway
Right-in/right-out (RIRO) and left-in/left-out (LILO) refer to a type of three-way road intersection where turning movements of vehicles are restricted. A RIRO permits only right turns and a LILO permits only left turns.


Plus–minus sign

The plus–minus sign, ±, is a mathematical symbol with multiple meanings:

  • In mathematics, it generally indicates a choice of exactly two possible values, one of which is obtained through addition and the other through subtraction.
  • In experimental sciences, the sign commonly indicates the confidence interval or uncertainty bounding a range of possible errors in a measurement, often the standard deviation or standard error. The sign may also represent an inclusive range of values that a reading might have.
  • In medicine, it means "with or without".
  • In engineering, the sign indicates the tolerance, which is the range of values that are considered to be acceptable, safe, or which comply with some standard or with a contract.
  • In botany, it is used in morphological descriptions to notate "more or less".
  • In chemistry, the sign is used to indicate a racemic mixture.
  • In chess, the sign indicates a clear advantage for the white player; the complementary minus-or-plus sign, , indicates the same advantage for the black player.
  • In electronics, this sign may indicate a dual voltage power supply, such as ±5 volts means +5 volts and −5 volts, when used with audio circuits and operational amplifiers.
  • In linguistics, it may indicate a distinctive feature, such as [±voiced].