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A gross is equal to a dozen dozen, i.e. 12 × 12 = 144.

It can be used in duodecimal counting. The use of gross likely originated from the fact that 144 can be counted on the fingers using the fingertips and first two joints of each finger when marked by the thumb of one hand. The other hand is then used to count multiples of 12. Therefore, 12 countings of 12 equals 144. It is a simple counting system that can be practiced without paper or other marks.

The term is often used in commercial contexts implying a quantity of 144 items. A count of 1728 or a dozen gross equals a great gross. Though a gross is often said to mean simply "144", it is subject to the usage rules for a unit, as opposed to those for numbers:

1. it is always preceded by an article or a number;
2. when the preceding word is a number, it often implies multiplication rather than combining that number of separate counts, e.g. "two gross" can refer equally to a single container into which 288 items were counted, or to a pair of containers into each of which 144 were counted
3. normally (i.e., save for in situations justifying extreme brevity), specifying the kind of objects being counted may not be done by positioning the kind directly following "gross", but requires that the word "of" intervene, e.g. "288 apples", but "two gross of apples"

Its common abbreviations are either "gr" or "gro".

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Look up gross or groß in Wiktionary, the free dictionary.

Gross may refer to:

• Gross (economics), before deductions
• Gross (unit), a counting unit equal to 144
• Gross (surname)
• Gross, Nebraska, a US village
• Gross Island, Canada
• Gross!, a television show on Discovery Channel

See also[link]

• Grosz
• Kross (disambiguation)
• G.R.O.S.S., a club in the Calvin and Hobbes comic strip

This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article.

Look up unit in Wiktionary, the free dictionary.

Unit may refer to:

Mathematics[link]

• Unit (ring theory), an element that is invertible with respect to ring multiplication
• 1 (number), the unit number
• Unit vector, a vector with length equal to 1

Science and technology[link]

• Units (software), a software program for unit conversion
• Units of measurement, a standardized quantity of measurement of a physical quantity
• Enzyme unit
• Unit operation, a basic step in a chemical plant process
• Functional unit, a component of a computer system such as the CPU
• Unit of blood, a measurement in blood transfusion equal to one pint or 450 ml
• Unit of alcohol, 10 millilitres of pure ethanol in the United Kingdom
• Rack unit, a measure to describe the height of rack-mounted computer equipment
• Geological unit or rock unit, a volume of identifiable rock or ice
• In statistics:
  • Unit of observation, a type of entity (e.g. person, house, neighborhood) specifying the level at which data is collected
  • Unit of analysis, a type of entity (e.g. person, house, neighborhood) specifying the level at which data is analyzed
  • Statistical unit, a single data point, or collection of data points grouped as a single entity, on which statistical analysis is performed

Entertainment and the arts[link]

• UNIT, a fictional military organization in the science fiction television series Doctor Who
• Unit (album), by the Australian band Regurgitator
• Unit (art collective), a British artists' collective
• G-Unit, a hip-hop music group
• The Units, a synthpunk band
• The Unit, an American television series
• Second unit, a team that shoots footage which is of lesser importance for the final motion picture
• Unit of action, a discrete piece of action (or beat) in a theatrical presentation
• UNIT Post Production, a British company
• The Tony Rice Unit, an American bluegrass group

Other uses[link]

• Unit (housing), a self-contained suite of rooms within a set of similar dwellings
• Unit of account, a monetary unit of measurement
• An apartment
• Multiple unit, a passenger train where each carriage has it own motors
• Military unit
• Strategic business unit
• In real time strategy games, an individual (or squad, depending on the game) infantry or vehicle
• Work unit or danwei (单位), a place of employment in China

See also[link]

• UNITA
• Subunit (disambiguation)

This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article.